Step 1
Preheat the oven to 450 degrees. Mix together the chili powder, paprika, cumin, garlic powder, oregano, salt, and pepper to create the fajita seasoning.
Step 2
Toss together the shrimp, peppers, and onions with the olive oil and fajita seasoning. Cover a baking sheet with foil and spray with cooking spray. Spread out the shrimp, peppers, and onions onto the baking sheet in a single layer.
Step 3
Bake for 6-8 minutes. Fior some char, turn the oven to broil, and cook for 2 minutes. Just be careful not to overcook the shrimp. Serve on warm tortillas with your favorite fajita toppings.