Cook the brown rice according to package instructions until tender and set aside.
Slice the chicken breast into thin strips and season 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 strips to the skillet and sauté until golden brown and cooked through, approximately 5-7 minutes.
Remove the chicken from the pan and add the sliced bell peppers and onions, sautéing until they are tender-crisp and slightly charred.
Return the chicken to the skillet and toss with the vegetables to combine and reheat.
Assemble the bowl by placing the cooked brown rice at the bottom and topping it with the chicken and pepper mixture.
Garnish with fresh salsa, sliced avocado, and chopped cilantro.
Serve immediately with a lime wedge for a bright finish.