Heat the olive oil in a large skillet over medium-high heat.
Add the diced red onion and bell peppers to the skillet and sauté for 3 to 4 minutes until they begin to soften.
Add the ground beef to the skillet, breaking it into small crumbles with a spatula as it cooks.
Season the beef with chipotle powder, cumin, garlic powder, sea salt, and black pepper, stirring well to incorporate the spices.
Cook the beef for 6 to 8 minutes or until it is fully browned and cooked through.
In a separate pan or in the microwave, lightly steam the cauliflower rice until it is tender but still has a slight bite.
Assemble the bowl by placing the cauliflower rice at the bottom and topping it with the spiced beef and pepper mixture.
Garnish the bowl with sliced avocado, fresh cilantro, and a generous squeeze of lime juice before serving.