Juicy Chicken Fajitas with Melty Cheese — Dinner in 30 Minutes

These chicken fajitas are a weeknight lifesaver: juicy chicken, crisp peppers, sweet onion, and a blanket of gooey cheese that melts right in the skillet. In just 30 minutes, you get a hot, fragrant pan of fajitas that disappears faster than it cools.

Ingredients

• Chicken breast — 600g (1 lb 5 oz)
• Bell peppers, red and yellow — 2
• Red onion — 1
• Garlic — 2 cloves
• Shredded mozzarella — 150g (5 1/3 oz)
• Shredded cheddar — 100g (3 1/2 oz)
• Flour tortillas, 15 cm (6 in) diameter — 8
• Vegetable oil — 2 tbsp
• Lime juice (or lemon juice) — 1 tbsp
• Smoked paprika — 1 tsp
• Ground cumin — 1 tsp
• Chili powder — 1/2 tsp (to taste)
• Salt — 3/4 tsp
• Ground black pepper — 1/4 tsp
• Fresh cilantro — 10g (1/3 oz)
• Jalapeño — 1 (optional)
• Sour cream for serving — 100g (3 1/2 oz)

Step-by-Step Recipe

1. Prepare the ingredients: slice the chicken breast into thin strips; cut the peppers into thin strips; slice the onion into wedges; finely mince the garlic.
2. Make the marinade: whisk together the oil, lime juice, paprika, cumin, chili powder, salt, and black pepper. Add the chicken, toss well, and let it sit for 10 minutes.
3. Heat a large skillet over high heat. Add the chicken in a single layer and cook for 4–5 minutes until browned. Transfer to a plate.
4. In the same skillet, quickly sauté the onion and peppers for 3–4 minutes until softened but still slightly crisp.
5. Return the chicken to the skillet, toss with the vegetables, and warm through for 1 minute. Taste and adjust the seasoning if needed.
6. Sprinkle the mozzarella and cheddar evenly over the mixture, cover with a lid, and let it sit for 1–2 minutes until the cheese turns stretchy and melted.
7. Warm the tortillas in a dry skillet for 20–30 seconds per side.
8. Assemble the fajitas: spoon the filling into each tortilla, add cilantro, jalapeño slices, and a little sour cream. Serve right away.

Nutrition per Serving

What to Serve With It

• Lime wedges for a bright, fresh finish.
• Guacamole or a sour cream-lime dip.
• Pico de gallo or your favorite salsa.
• Mexican rice or black beans.
• Pickled red onions for a sharp, colorful accent.

Tips and Variations

• Meat: chicken thighs turn out even juicier; you can also use beef (thin strips of sirloin) or turkey.
• Cheese: mozzarella and cheddar give you the ideal melt and flavor. For a deeper note, add a little smoked cheese.
• Heat: adjust the spice with chili powder and jalapeño; add a pinch of cayenne for extra kick.
• Oven method: spread the chicken and vegetables on a sheet pan, bake for 12–15 minutes at 220°C (428°F), then top with cheese and bake for another 2–3 minutes.
• Make-ahead: marinate the chicken for up to 12 hours — the flavor deepens, and dinner comes together in minutes.
• Tortillas: flour or corn tortillas both work; if you don’t have either, use thin flatbread.
• Dairy-free: use lactose-free cheese or leave it out and serve with guacamole.

Frequently Asked Questions