Heat the olive oil in a large skillet over medium-high heat.
Add the ground beef to the skillet, breaking it up with a spatula, and cook until it is browned and cooked through.
Add the diced bell peppers and red onion to the beef, sautéing for 5 minutes until the vegetables are tender and slightly caramelized.
Stir in the chili powder, cumin, smoked paprika, garlic powder, sea salt, and black pepper to evenly coat the beef and vegetables.
Lightly steam the cauliflower rice in a separate pan or the microwave until tender and fluffy.
Stir the rinsed black beans into the beef mixture and cook for 2 minutes until warmed through.
Divide the cauliflower rice into bowls and top with the smoky beef and bean mixture.
Garnish each bowl with fresh avocado slices, a dollop of Greek yogurt, a drizzle of lime juice, and chopped cilantro.