Step 1

Season chicken with cumin, chili powder, and 1/4 tsp. each salt and pepper. Heat oil in large cast-iron skillet on medium-high. Add chicken and cook, stirring occasionally, until cooked through, 5 to 7 min. Transfer to plate.

Step 2

To same skillet, add red pepper, onion, mushrooms, and garlic and cook, stirring occasionally, until soft, 4 to 6 min. Stir in chipotle chiles, lime juice, chicken, and a pinch each of salt and pepper. Cook, stirring, until heated through.

Step 3

Serve chicken and vegetables with tortillas and toppings.