Step 1

Bring a skillet sprayed with nonstick spray to medium heat. Add cauliflower, 1/2 tsp. lime juice, 1/2 tsp. fajita seasoning, 1/2 tsp. garlic powder, and cumin. Cook and stir until softened, about 5 minutes. Transfer to a medium bowl, stir in cilantro, and cover to keep warm.

Step 2

Remove skillet from heat; clean, if needed. Respray, and bring to medium-high heat. Add pepper and onion. Cook and stir until slightly softened and lightly browned, about 3 minutes.

Step 3

Add shrimp and remaining 1/2 tsp. lime juice, 1/2 tsp. fajita seasoning, and 1/4 tsp. garlic powder. Cook and stir until veggies have softened and shrimp are cooked through, about 4 minutes.

Step 4

Transfer to the bowl, and top with cheese and sour cream.