They have a "gluten conscious" menu. Be very careful about ordering from it, because some items are grilled on the GF menu are breaded on the regular menu, so if you don't specify, you will get breaded. For example, the shrimp in the Baja Shrimp taco, or the mushrooms in the Independent taco. And always ask for corn tortillas.
Aside from that, the tacos are great, as are the queso, guacamole, and the street corn.