Peel, de-vein, and pat shrimp dry. Season with the fajita seasoning and 1 tbsp of oil.
Preheat Cast Iron skillet and place remaining oil, Bell Peppers, Onions, and remaining seasoning. Stir well and cook for about 7 minutes till onions and peppers become soft.
Remove onions and peppers from skillet and place seasoned shrimp on skillet. Cook for about 2 minutes or until shrimp is a light pink. Flip shrimp over and cook for another 2 minutes or until shrimp is no longer opaque. Do not over cook the shrimp, it will become rubbery.
Heat flour tortillas on a clean skillet until warm, and keep in foil or wrapped in a clean kitchen towel.
Serve shrimp fajitas in tortillas and top with guacamole.
Nutritional information is provided as an estimate only and depends on ingredients and amounts used. Thai Caliente makes no guarantees to the accuracy of this information.