Homemade Fajitas

I go pretty simple with my fajita marinade: some olive oil, kosher salt, coarse milled black pepper, lime zest, lime juice, a touch of cumin, and a couple dashes of Sriracha. Throw it in a zip-loc with the steak or chicken, get it all coated, and let it set for a couple or three hours... Grill. Let rest. Slice.