Dice the chicken breast into bite-sized pieces and slice the bell peppers and red onion into thin strips.
Heat the olive oil in a large skillet over medium-high heat.
Add the chicken to the skillet and season with sea salt, black pepper, chili powder, ground cumin, and garlic powder.
Sauté the chicken for 5-6 minutes until browned and nearly cooked through.
Add the bell peppers and red onion to the skillet and continue to sauté for another 3-4 minutes until the vegetables are tender-crisp.
Place the warm cooked brown rice in the base of a serving bowl.
Top the rice with the spiced chicken and vegetable mixture.
Finish the bowl by adding the fresh salsa, sliced avocado, and chopped cilantro.
Drizzle with lime juice just before serving for a bright, citrusy pop.