Heat 1 tablespoon oil in a large skillet or pan. Add the chopped onion, bell pepper, and garlic to the pan. Cook for 1 minute or until tender.
Add the shrimp and taco seasoning and cook for another 1-2 minutes or until shrimp begins to turn pink.
Transfer the mixture to a bowl and rinse and whip down the pan with a paper towel. Return the pan to the heat and spray cooking spray or brush with about 1 teaspoon vegetable oil.
Place a tortilla in the pan and sprinkle cheese on one side of the tortilla. Spoon about 5-6 shrimp or enough to cover with another sprinkle of cheese. Fold tortilla in half. Cook for 2-3 minutes on each side or until golden and crispy. Repeat for reaming tortillas.
Serve with Sour cream, salsa, or guacamole.