Tex Mex fajitas were first made with skirt steak and eaten by ranch hands. Fajitas now include steak, chicken, shrimp, fish, and even vegetables as fillings. McCormick Gourmet Collection Fajita Seasoning brings together a classic blend of red pepper, jalapeños, bell peppers and a hint of lime that adds savory Southwestern flavor to the fajita filling of your choice.