Season the chicken breast evenly with chili powder, cumin, garlic powder, sea salt, and black pepper.
Heat the olive oil in a large skillet over medium-high heat.
Add the chicken to the skillet and cook for 5-7 minutes per side until golden brown and the internal temperature reaches 165°F.
Remove the chicken from the skillet and let it rest for 3 minutes before slicing into strips.
In the same skillet, add the sliced bell peppers and red onions, sautéing for 4-5 minutes until they are tender and slightly charred.
Place the warm cooked brown rice in a bowl as the base.
Arrange the sliced chicken and sautéed vegetables over the rice.
Top with fresh avocado slices and salsa.
Garnish with chopped cilantro and a fresh squeeze of lime juice before serving.