Creamy Chicken Fajita Pasta Skillet

Chicken hits the pan and everything changes fast. Three cloves, some peppers, one pot — 45 minutes later you’re eating something that tastes like it took hours. This is the kind of dinner that works on a Tuesday when you’re tired and have nothing else planned.

Why You’ll Love This One Pot Chicken Pasta

Comes together in the same pan. No colander, no draining, no second dish to wash — just the one pot you cooked in.

Works cold the next day. Maybe better. The flavors actually settle overnight, the sauce coats everything differently.

Tastes like comfort but doesn’t make you feel heavy after. Thighs stay moist, penne softens into the sauce, that sharp cheddar cuts through the cream so it’s not cloying.

Kid-approved but not boring for adults. The fajita seasoning and green chiles keep it interesting — not spicy unless you pile on the jalapeños yourself.

Takes 45 minutes total. 20 to prep. 25 in the pot. Some nights that’s all the time you have.

What You Need for One Pot Chicken Pasta

Chicken thighs. Cut them into bite-sized chunks or strips — doesn’t matter which. Thighs stay moist because of the fat. Breasts work if that’s what you have, but they dry out faster.

Olive oil. Two tablespoons split into two uses. The first batch sears the chicken. The second softens the onions and peppers.

Salt and pepper. Not fancy. Half a teaspoon of each, split so some hits the raw chicken and some finishes the whole thing.

One large onion, sliced. Yellow works. White’s sharper but fine. Red if you want it to stay colorful.

Bell peppers. Three of them, different colors if you can grab them. Sliced. They break down into the sauce and sweeten as they cook.

Fajita seasoning. One tablespoon. The shortcut that makes this work.

Two garlic cloves, minced. Don’t skip this. Burns in a second though, so pay attention.

Canned fire roasted tomatoes. One 14-ounce can, with juice. Not fresh. The roasted ones have depth.

Green chiles. A 4-ounce can. Mild heat. Optional if you want zero spice, but it’s not much.

Milk or half and half. One and a quarter cups. Cream makes it richer. Whole milk works. Oat milk if dairy isn’t your thing — won’t be quite as thick but gets there.

Chicken broth. One and a half cups. Homemade if you have it. Boxed if you don’t. Doesn’t matter much.

Penne pasta. Twelve ounces. Dry, uncooked. It cooks right in the pot with everything else.

Sharp cheddar cheese. One and a half cups, shredded. Not mild. You need the bite.

Garnishes are optional. Green onions sliced, jalapeños, salsa, guacamole, lime wedges. Use what’s in your fridge. Most of it sits on top so you can taste distinct flavors instead of one mashed thing.

How to Make One Pot Chicken Pasta

Cut the chicken into chunks or strips — whatever size you want. Season with half the salt and half the pepper right now, while it’s raw. Gets it into the meat instead of just coating the outside.

Heat one tablespoon of olive oil in a heavy-bottomed pot over medium heat. Wait for the sizzle. When the chicken hits, that sound tells you the pan’s ready. Cook until the pieces lose their pink and develop golden edges, maybe 5 to 7 minutes. It should smell savory. Pull it out and set it aside on a plate.

Add the remaining tablespoon of oil. Throw in the sliced onion and peppers. Stir every minute or so. They’ll start to soften and the edges will brown — watch for about 7 to 9 minutes. The kitchen should smell sweet and earthy. Don’t let them blacken though. Just browned.

Return the chicken to the pot. Sprinkle the fajita seasoning over everything. Add the minced garlic and stir constantly. This part goes fast — garlic burns in maybe 45 seconds to a minute. You’ll know the smell changed. That’s when you move on.

How to Get the Sauce Right on Chicken Penne with Fire Roasted Tomatoes

Pour in the tomatoes with all their juice. Add the green chiles. Add the milk. Add the broth. Dump in the dry penne pasta. Stir until everything’s covered, until you can’t see dry pasta pieces sticking up.

Crank the heat up. Get it to a boil. Once it’s rolling — proper boiling, not just steaming — drop the heat to medium-low for a simmer. Violent boiling makes a mess and cooks unevenly. Stir every few minutes, especially near the bottom where pasta sticks. This takes 17 to 22 minutes. The pasta will go from hard to soft. You’re looking for it to be just tender but still slightly toothy, not mushy. The sauce will look loose right now. That’s correct. That’s what you want.

Pull it off the heat. Fold in the cheddar cheese. Don’t stir aggressively — just fold it in, let it melt. It thickens everything fast, turns that liquid into a creamy coating. Taste it. Add more salt or pepper if it needs it.

One Pot Chicken Pasta Tips and Common Mistakes

Garlic burns stupid fast. If you’re not paying attention or if your burner runs hot, garlic goes from fragrant to burnt in like half a minute. You either stir immediately or pull the whole pot off heat for 10 seconds. Most people just stir.

Pasta sticks to the bottom if you’re not stirring. Especially in those last few minutes when the liquid’s dropping and everything’s closer together. Stir every two or three minutes. It’s not a big deal but it matters.

The sauce looks thin before the cheese melts. People panic. It’s supposed to. The cheddar thickens it — trust that. If you add more broth or milk before tasting the final thing, it gets too thin.

Chicken pieces matter. Smaller chunks cook faster and more evenly. Bigger ones might still have pink in the middle when the pasta’s done. An inch or so is the sweet spot.

Thighs have bone sometimes. That’s fine. Adds flavor to the broth. Skin stays flabby unless you crisp it separately beforehand, which is extra work. Skip the skin or peel it off raw.

Whole milk, half and half, cream — they all work but the texture changes. Cream gets richer. Oat milk gets thinner. Coconut milk gets weird. Stick with what you have.

Creamy Chicken Fajita Pasta Skillet

By Emma

Prep:

20 min

Cook:

25 min

Total:

45 min

Servings:

6 servings

Ingredients

• 1 lb chicken thighs cut bite sized or strips
• 2 Tbsp olive oil divided
• 1 tsp salt divided
• 1/2 tsp black pepper divided
• 1 large onion sliced
• 3 bell peppers assorted colors sliced
• 1 Tbsp fajita seasoning
• 2 garlic cloves minced
• 1 can (14 oz) diced fire roasted tomatoes
• 1 can (4 oz) diced green chiles
• 1 1/4 cups milk or half and half
• 1 1/2 cups chicken broth
• 12 oz penne pasta
• 1 1/2 cups shredded sharp cheddar cheese
• garnishes green onions sliced jalapeños salsa guacamole lime wedges optional

Method

1. 1 Cut chicken into bite sized chunks or strips - thighs work best for moister bites but breasts do fine. Season with half salt and pepper.
2. 2 Heat 1 Tbsp oil in a heavy bottom pot over medium heat. Hear that sizzle as chicken hits pan? Cook until pieces lose pink, develop golden bits and smell savory, about 5-7 minutes. Remove chicken set aside.
3. 3 Add remaining olive oil. Throw in sliced onions and peppers. Stir occasionally – they should soften and start caramelizing after 7-9 minutes, smell sweet and earthy. Watch edges brown but do not blacken.
4. 4 Return chicken to pot. Sprinkle fajita seasoning and toss in garlic. Stir constantly - that aroma hits fast, 45 seconds to 1 minute max before garlic burns.
5. 5 Pour in diced tomatoes with juices, green chiles for mild heat, milk (or half and half if you want it richer), broth, and dry penne pasta. Stir to combine everything evenly.
6. 6 Raise heat to boil. Once rolling boil appears, reduce to a simmer to avoid wild bubbles that make a mess and cause uneven cooking. Stir every few minutes to prevent pasta clumping/sticking along bottom. Cook 17-22 minutes until penne swells and is just tender but slightly toothy. Sauce will be loose now, that’s expected.
7. 7 Pull from heat. Fold in shredded cheddar cheese – it melts thickening sauce quickly, turning clammy liquid into creamy coating for each noodle and chunk. Taste for salt pepper, add if needed.
8. 8 Serve with whatever you have handy - I throw green onions, slices jalapeños, a spoon of salsa, guacamole dollop, squeeze lime. It perks the whole thing up.
9. 9 If short on time or pan space, slice chicken smaller so cooks faster and more even. Bone in chicken or thighs can add broth flavor but skip skin unless you crisp separately for texture contrast.
10. 10 Use whole milk easily swapped with cream or unsweetened oat milk if dairy intolerant - flavor shifts but dish holds well.
11. 11 Common traps: garlic burns fast, stir or remove from heat. Pasta sticks to pan if you don’t stir often especially near end. Sauce consistency looks thin pre-cheese but trust the melt thickens it.

Nutritional information

Calories

420

Protein

30g

Carbs

35g

Fat

18g

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Frequently Asked Questions About One Pot Chicken Pasta

Can I use chicken breasts instead of thighs? Yeah. They cook faster and come out drier. Cut them into smaller pieces so they’re ready by the time the pasta is. Not ideal but works.

How long does this keep in the fridge? Four days, maybe five. Gets thicker as the pasta absorbs more sauce. Add a splash of milk when you reheat if it’s too thick.

Can I add vegetables? Broccoli, spinach, mushrooms — throw them in when you add the peppers. They’ll cook down with everything else. Frozen’s fine. Doesn’t change the timing much.

What if I don’t have green chiles? Leave them out. Or use jalapeños or a dash of hot sauce at the end. The dish works either way — it’s just milder without them.

Does this freeze? Not great. The pasta gets weird, the sauce separates. Fridge it instead. Tastes better that way.

Can I use different pasta? Any pasta works. Penne’s nice because the sauce gets inside the tubes. Rigatoni, rotini, shells — all fine. Timing stays the same.

What’s the best way to reheat it? Stovetop over medium heat, stirring, with a splash of milk. Microwave works if you stir halfway through. Low and slow beats hot and fast.