Dice the chicken breast into uniform 1-inch cubes and toss in a bowl with chili powder, cumin, garlic powder, sea salt, and black pepper until well coated.
Heat the olive oil in a large skillet over medium-high heat. Once shimmering, add the chicken and sear for 5-7 minutes until golden brown and cooked through.
Remove the chicken from the skillet and set aside. In the same pan, add the diced bell peppers and red onion, sautéing for 3-4 minutes until they develop a slight char.
Add the cauliflower rice to the skillet with the vegetables, stirring for 2 minutes until tender but not mushy.
Divide the cauliflower rice and vegetable mixture into bowls, then top with the seasoned chicken.
Garnish each bowl with a quarter of an avocado, a dollop of Greek yogurt as a clean-eating sour cream swap, and fresh salsa.
Finish with a shower of chopped cilantro and a squeeze of fresh lime juice to brighten all the flavors.