In a bowl, mix the chipotle chili powder, ground cumin, smoked paprika, garlic powder, and salt. Rub the seasoning mixture onto the chicken breasts.
Cook the Chicken:
Heat 2 tablespoons of olive oil in a large skillet over medium-high heat. Add the chicken breasts and cook for 6-7 minutes on each side, or until the internal temperature reaches 165°F (74°C) and the chicken is fully cooked. Remove from the skillet and let rest for a few minutes before slicing.
Prepare the Black Beans:
In the same skillet, add the remaining 2 tablespoons of olive oil and the black beans. Cook for 2-3 minutes until heated through.
Assemble the Bowls:
Divide the cooked brown rice among four bowls. Top each with sliced chicken, black beans, avocado slices, and chopped cilantro.
Garnish each bowl with a lime wedge and serve immediately.