In a small bowl, combine the lemon juice, chili powder, oregano, garlic powder, ¼ teaspoon sea salt, and 1 tablespoon of the olive oil. Mix well. Rub both sides of the steak with the spice mixture.

In a nonstick skillet over medium heat, cook the steak for 3 minutes on each side, or until desired doneness. Set aside to rest.

In a separate skillet over medium heat, heat the remaining 1 tablespoon olive oil. Add the garlic and cook for 30 seconds, or until fragrant. Add the cauliflower rice and ¼ teaspoon sea salt. Stir well and cook for 5 minutes, or until tender. Add the parsley and stir.

Slice the steak. In 2 bowls, layer the cauliflower rice followed by the steak. Add the radishes, tomatoes, onion, and avocado. Season with sea salt and black pepper to taste.