Cook the rice: Prepare rice according to package directions.
Fluff and set aside. For extra flavor, stir in a squeeze of lime juice, a pinch of salt, and chopped cilantro.
Season the chicken: In a bowl, toss chicken with 1 tablespoon oil, chili powder, cumin, smoked paprika, garlic powder, onion powder, oregano, salt, pepper, and the lime zest. Let it sit 10 minutes while you prep veggies.
Sauté the veggies: Heat 1/2 tablespoon oil in a large skillet over medium-high heat.
Add bell pepper and red onion. Cook 4–5 minutes until crisp-tender. Remove to a plate.
Cook the chicken: Add remaining oil to the same skillet.
Add chicken in a single layer. Cook 5–7 minutes, stirring once or twice, until browned and cooked through. Squeeze in 1 tablespoon lime juice.
Taste and adjust salt.
Warm the beans and corn: In a small saucepan, heat black beans with a splash of water and a pinch of salt. Warm the corn separately or stir it in with the beans.
Assemble the bowls: Add a scoop of rice to each bowl. Top with chicken, beans, corn, sautéed veggies, shredded lettuce, pico or salsa, avocado or guacamole, and cheese.
Add cool and crunchy elements: Spoon on Greek yogurt or sour cream.
Sprinkle cilantro. Add extras like pickled jalapeños, radishes, or tortilla strips for texture.
Finish and serve: Drizzle with hot sauce or more lime juice. Serve right away while the chicken is warm and the toppings are fresh.