Add all ingredients to a small dish or mason jar. Mix well.
Use immediately, or cover and store in a cool, dark place until you're ready to use it.
Video
Notes
How much to use: As a general rule of thumb, use between 2 teaspoons to 1 tablespoon of fajita seasoning for every pound of protein you cook.Spicy vs. mild: If you like your fajitas a little milder, use less cayenne pepper or leave it out completely. If you don't mind the spice, add as directed by the recipe, then add more to taste.