Prep the chicken: Pat the chicken dry and cut into bite-size pieces. Toss with chili powder, cumin, smoked paprika, garlic powder, onion powder, and salt.
Sear the chicken: Heat olive oil in a large skillet over medium-high.
Add chicken and cook 5–7 minutes, stirring occasionally, until lightly browned and cooked through.
Add the sauce: Reduce heat to medium-low. Pour in the enchilada sauce and simmer 3–4 minutes, stirring to coat until the sauce clings to the chicken.
Warm the add-ins: In a separate pan (or the microwave), warm the black beans and corn. If using quinoa or rice, warm it too so the bowls assemble easily.
Sauté quick veggies: Lightly sauté the red bell pepper and red onion with a pinch of salt for 2–3 minutes until crisp-tender, or leave them raw for extra crunch.
Assemble the bowls: Add a base of brown rice or quinoa.
Top with saucy chicken, beans, corn, peppers, and onions.
Finish with toppings: Sprinkle cheese if using. Add avocado, a dollop of Greek yogurt, and plenty of fresh cilantro. Squeeze lime over the top for brightness.
Taste and adjust: Add more salt, a dash of hot sauce, or extra lime if needed.
Serve warm.