In a small bowl, combine the chili powder, cumin, garlic powder, onion powder, sea salt, and black pepper.
Rub the spice blend evenly over the chicken breast until well coated.
Heat the olive oil in a large skillet over medium-high heat.
Add the chicken to the skillet and cook for 6-7 minutes per side until golden brown and cooked through.
Remove the chicken from the pan to rest for a few minutes, then slice into thin strips.
In the same skillet, add the bell peppers and cauliflower rice, sautéing for 4-5 minutes until tender.
Stir in the black beans and heat for an additional 2 minutes until warmed through.
In a small bowl, mash the avocado with Greek yogurt and lime juice until the mixture is smooth and creamy.
Assemble the bowl by layering the cauliflower rice and bean mixture, then topping with the sliced chicken.
Finish with a dollop of avocado crema and a garnish of fresh cilantro before serving.