Preheat oven to 400°F (200°C) or heat a skillet over medium heat.
Brush chicken with olive oil and coat evenly with taco seasoning. Bake for 20-25 minutes or cook in skillet 6-7 minutes per side until internal temperature reaches 165°F (74°C). Let rest, then slice or dice.
Cook brown rice according to package instructions and fluff with a fork. Drain and rinse black beans. Chop tomatoes, onion, and lettuce. Mix Greek yogurt with lime juice to make a sauce.
Assemble bowls with brown rice, sliced chicken, beans, corn, vegetables, avocado, sauce, and cilantro.
Notes
Feel free to customize with your favorite toppings or add hot sauce for extra flavor.