Cook the base: Make brown rice according to package instructions, or sauté cauliflower rice with a little oil and salt until tender. Fluff and set aside.
Prep the chicken: Pat chicken dry.
In a bowl, mix 1.5 teaspoons chili powder, 1 teaspoon cumin, 1 teaspoon smoked paprika, 1 teaspoon garlic powder, 1/2 teaspoon onion powder, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Add lime zest from one lime and 1 tablespoon oil. Toss chicken to coat.
Cook the chicken: Heat a large skillet over medium-high.
Add a light drizzle of oil. Cook chicken 4–6 minutes per side, until browned and cooked through. Rest 5 minutes, then slice or cube.
Sauté the peppers and onions: In the same pan, add sliced bell peppers and red onion with a pinch of salt.
Cook 5–7 minutes until tender-crisp. Remove from heat.
Warm the corn and beans: Add corn to the hot pan to lightly char for 2–3 minutes. Warm the black beans separately with a pinch of cumin and salt, or keep cold for a fresh contrast.
Make quick pico (or use store-bought): Combine diced tomatoes, minced red onion, chopped cilantro, a squeeze of lime, and salt.
Add minced jalapeño for heat if you like.
Mix a light yogurt sauce (optional): Stir plain Greek yogurt with lime juice and a pinch of salt for a creamy, low-calorie drizzle.
Assemble the bowls: Divide rice (or cauliflower rice) among 4–5 meal prep containers. Top with chicken, peppers and onions, black beans, corn, cherry tomatoes or pico, and greens if using.
Add toppings: Spoon on pico and a small drizzle of yogurt sauce. Add cilantro and hot sauce to taste.
If using avocado, slice right before eating to keep it fresh.
Adjust seasoning: Finish with fresh lime juice and a pinch of salt to brighten everything up.