Cut the chicken breast into bite-sized pieces and season evenly with sea salt, black pepper, chili powder, and cumin.
Heat the olive oil in a large skillet over medium-high heat.
Add the chicken and sliced bell peppers to the skillet, sautéing for 6-8 minutes until the chicken is cooked through and the peppers are tender-crisp.
While the chicken cooks, steam the cauliflower rice in a separate pan or microwave until soft and hot.
Rinse and drain the black beans, then warm them briefly in the skillet with the chicken.
Assemble the bowl by placing the cauliflower rice at the base, then topping with the chicken, peppers, and beans.
Finish the bowl with fresh avocado slices, salsa, and a sprinkle of chopped cilantro.