# Easy Chicken Fajitas

Chicken fajitas are strips of seasoned chicken cooked hot with peppers and onions, then piled into warm tortillas. They are fast, colorful and easy for everyone to build their own.

This version uses a homemade spice mix with chili, cumin and paprika and a squeeze of lime. A very hot skillet gives the char that makes fajitas taste restaurant-style.

- Total time: 30 min (prep 15 min, cook 15 min)
- Serves: 4
- Per serving (estimated): 420 kcal, 38 g protein
- Cuisine: Mexican. Category: Main course. Diet: high-protein.

## Ingredients

- 700 g chicken breast or boneless thighs, sliced into 1 cm strips
- 2 tbsp olive oil, divided
- 2 tsp chili powder
- 1 tsp ground cumin
- 1 tsp smoked paprika
- 1 tsp garlic powder
- 1 tsp kosher salt
- 1 tbsp lime juice (about 1 lime)
- 2 bell peppers, sliced into strips
- 1 large onion, sliced into strips
- 8 small flour or corn tortillas
- 1 avocado, sliced
- 1/2 cup sour cream

## Method

1. Mix the chili powder, cumin, paprika, garlic powder and salt in a small bowl.
2. Toss the chicken strips with 1 tbsp of the oil, the lime juice and 2 tbsp of the spice mix. Let sit 10 minutes while you slice the vegetables.
3. Heat a large cast-iron or heavy skillet over high heat for 2 minutes until very hot.
4. Add the chicken in a single layer, in two batches if needed. Cook 3 to 4 minutes, turning once, until browned and 165°F (74°C) inside. Move to a plate.
5. Add the remaining 1 tbsp oil, then the peppers and onion with the rest of the spice mix. Cook 4 to 5 minutes, stirring, until charred at the edges and just tender.
6. Return the chicken to the pan and toss for 1 minute to warm through.
7. Warm the tortillas in a dry pan for 20 seconds per side, or wrap in foil and heat in a 300°F (150°C) oven for 10 minutes.
8. Serve the chicken and vegetables in tortillas with avocado and sour cream.

## Why it works

- Cooking the chicken in batches on a very hot pan browns it instead of steaming it.
- Slicing the chicken thin means it cooks in just a few minutes, so it stays juicy.
- Lime juice in the marinade adds brightness and a little tenderness without making the chicken mushy.
- Cooking the vegetables in the same pan picks up the browned bits, which adds flavor.

## The science

- **Browning on a hot pan.** A very hot pan drives surface water off quickly, so the chicken browns through the Maillard reaction instead of steaming. Crowding the pan drops the temperature and traps steam, which is why cooking in batches matters.
- **Why a short marinade works.** Citrus and spices affect only the surface of meat. Ten to thirty minutes is enough to season and brighten; much longer in acid can turn the surface chalky and tough, so keep this marinade short.

## Tips

- Slice chicken against the grain for the most tender bites.
- Heat the pan until a drop of water skitters across it before adding chicken.
- Warm tortillas right before serving so they stay soft and flexible.

## Mistakes to avoid

- Piling all the chicken in at once steams it gray, so cook in two batches.
- Marinating in lime juice overnight makes the surface chalky, so keep it to 30 minutes.
- Cutting the vegetables too thick leaves them raw in the middle, so slice about 1 cm thick.

## Variations and swaps

- Use shrimp or steak strips instead of chicken and cook 2 to 3 minutes.
- Cook everything on a sheet pan at 425°F (220°C) for 20 to 22 minutes.
- Serve as a rice bowl with black beans and salsa.
- Swap flour tortillas for corn tortillas to make it gluten-free.
- Swap sour cream for Greek yogurt for more protein and a tangier finish.
- Swap the spice mix for 2 tbsp store-bought fajita seasoning.

## Storage

Refrigerate the chicken and vegetables within 2 hours; keep 3 to 4 days. Reheat in a skillet until the chicken reaches 165°F (74°C), and warm tortillas fresh.

## FAQ

**What is the best cut of chicken for fajitas?**

Boneless chicken breast or thighs both work. Breast is leaner and cooks quickly; thighs stay juicier and forgive a little extra heat.

**How do you keep chicken fajitas from getting dry?**

Slice the chicken thin, cook on a very hot pan for 3 to 4 minutes, and stop at 165°F (74°C). Overcooking is what dries it out.

**How long should chicken marinate for fajitas?**

Ten to thirty minutes is enough. Acid and salt only work on the surface, and long marinades can leave the chicken mushy or chalky.

**Can I make chicken fajitas in the oven?**

Yes. Toss everything on a sheet pan and roast at 425°F (220°C) for 20 to 22 minutes, stirring once, until the chicken hits 165°F (74°C).

**What goes with chicken fajitas?**

Rice, refried or black beans, guacamole, salsa and shredded cheese all work well. Warm tortillas are the main thing.

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Source: https://cookingscientist.com/recipes/chicken-fajitas (Cooking Scientist). Learn the science of cooking in the Cooking Scientist app for iPhone and iPad: https://apps.apple.com/app/id6830326846