Slice the chicken breast into thin, even strips and place them in a bowl.
Toss the chicken with chili powder, ground cumin, garlic powder, and sea salt until evenly coated.
Heat the olive oil in a large skillet over medium-high heat until shimmering.
Add the seasoned chicken to the skillet and sauté until golden brown and cooked through, approximately 5 to 7 minutes.
Remove the chicken from the pan and set aside; add the sliced bell peppers and red onion to the same skillet.
Sauté the vegetables for 3 to 4 minutes until they are tender-crisp and slightly charred.
Prepare the cauliflower rice by steaming it in a separate pan or microwave until soft.
Assemble the bowl by placing the cauliflower rice at the bottom, then topping with black beans, sautéed vegetables, and the cooked chicken.
Garnish with sliced avocado, fresh salsa, and chopped cilantro.
Finish with a bright squeeze of fresh lime juice over the entire bowl before serving.