Mix the seasoning: In a small bowl, combine chili powder, cumin, smoked paprika, garlic powder, onion powder, oregano, salt, black pepper, and cayenne if using. Set aside.
Prep the chicken: Pat the chicken dry.
Toss with half the olive oil and about two-thirds of the seasoning mix until evenly coated.
Season the veggies: In a separate bowl, combine sliced peppers and onions with the remaining olive oil and remaining seasoning. Toss well.
Cook the chicken: Heat a large skillet over medium-high heat. Add the chicken in a single layer.
Cook 4–6 minutes, stirring once or twice, until browned and cooked through. Remove to a plate and cover.
Cook the veggies: In the same skillet, add the peppers and onions. Sauté 5–7 minutes until tender-crisp with some char.
If the pan looks dry, add a tablespoon of water to deglaze and lift up the flavorful bits.
Finish with lime: Return the chicken to the skillet and squeeze in half a lime. Toss to coat and warm through. Taste and adjust salt or lime as needed.
Prepare the base: Warm your cauliflower rice, brown rice, or quinoa.
If using black beans, warm them briefly with a pinch of salt and a splash of water.
Assemble the bowls: Divide the base among 4 containers. Top each with chicken, pepper-onion mix, and black beans if using. Add pico, cilantro, and a lime wedge.
Keep yogurt and avocado separate until serving.
Cool before storing: Let the bowls cool uncovered for about 15–20 minutes before sealing to prevent condensation.