This fajita seasoning recipe is perfect for steak, shrimp, or chicken fajitas, with cayenne powder, paprika, garlic powder, onion powder, oregano, salt, brown sugar, cumin and black pepper. This is my personal favorite blend. Ever get a wild craving to suddenly make fajitas? I do! Growing up we always used those store bought packets, which worked great, but as I grew older and began to experiment, I found making my own spice mix at home results in a more personal experience.