Season chicken breast with chili powder, cumin, garlic powder, and sea salt.
Heat olive oil in a skillet over medium-high heat.
Add chicken to the skillet and cook for 5-7 minutes per side until golden brown and cooked through.
Remove chicken and let it rest, then slice into strips.
In the same skillet, sauté bell peppers and onions until tender-crisp.
Assemble the bowl by placing cooked brown rice at the bottom.
Top with sliced chicken, sautéed vegetables, black beans, and avocado.
Garnish with fresh salsa and a squeeze of lime juice.