Fajita seasoning can be served on so many things! Try it on beef, shrimp, chicken, or other proteins. You can also season vegetables like bell peppers and onions with it. Think outside the box and sprinkle it on rice, beans, salsa, guacamole, or corn on the cob. It goes on just about any Tex-Mex dish! Or, mix fajita seasoning with olive oil and use it as a marinade!