Heat the olive oil in a medium skillet over medium-high heat.
Add the diced red onion and red bell pepper to the skillet, sautéing for 3-4 minutes until they begin to soften.
Add the ground beef to the pan, breaking it into small crumbles with a wooden spoon or spatula.
Cook the beef until it is fully browned and no pink remains, then drain any excess liquid if necessary.
Stir in the chili powder, cumin, garlic powder, sea salt, and black pepper, ensuring the meat is evenly coated.
While the beef finishes, lightly steam the cauliflower rice in a separate pan or microwave until tender but not mushy.
Place the cauliflower rice in the base of a large bowl and top with the seasoned beef and vegetable mixture.
Garnish the bowl with sliced avocado, salsa, a dollop of Greek yogurt, and fresh cilantro before serving.