Slice the chicken breast into thin, bite-sized strips.
In a small bowl, whisk together the chili powder, ground cumin, garlic powder, sea salt, and black pepper.
Coat the chicken strips thoroughly with the spice mixture.
Heat the avocado oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and sauté for 5-7 minutes until golden brown and cooked through.
Remove the chicken from the pan and set aside, then add the sliced bell peppers and diced onions to the same pan.
Sauté the vegetables for 3-4 minutes until they are tender yet still vibrant.
In a serving bowl, combine the warm cooked brown rice and the rinsed black beans.
Layer the sautéed chicken and vegetables over the rice and bean base.
Top the bowl with fresh avocado slices, salsa, and chopped cilantro, then finish with a squeeze of fresh lime juice.