Toss chicken with 1 tbsp olive oil, chili powder, cumin, paprika, garlic powder, salt, and pepper. Let rest 10 minutes while prepping veggies.
Heat remaining oil in a large skillet over medium-high heat. Cook chicken 5–7 minutes until browned and cooked through; remove.
In the same skillet, add peppers and onion; cook 6–8 minutes until softened with some char. Season with a pinch of salt.
Return chicken to pan, toss to combine and warm through. Squeeze lime over everything.
Divide rice/quinoa into 4 meal-prep containers, top with chicken and veggies, garnish with cilantro, and let cool before sealing.