Preheat the oven to 400°F (200°C). Line a baking sheet with parchment paper.
In a small bowl, combine cumin, paprika, garlic powder, onion powder, salt, and pepper. Rub this spice mix evenly over the fish fillets.
Place the seasoned fish fillets on the prepared baking sheet. Drizzle with olive oil and bake for 12-15 minutes, or until the fish is cooked through and flakes easily with a fork.
While the fish is baking, steam the cauliflower rice according to package instructions. This can usually be done in the microwave for 5-6 minutes.
In a large bowl or individual serving bowls, start with a base of cauliflower rice. Top with shredded lettuce, chopped tomatoes, and red onion.
Once the fish is baked, gently flake it with a fork and place it on top of the vegetables.
Add diced avocado over the fish, and garnish with fresh cilantro.
Squeeze fresh lime juice over the bowl just before eating.
Notes
Feel free to customize with your favorite toppings.