Their website has a good write up about GF, and was not disappointed. Seriously accommodate GF like it's nothing. All burgers can be made GF and the staff knew what was and what was not GF.
I had the Diablo, wife had the hangover, we shared fries (cooked in a stand alone GF fryer), sweet potato fries and GF chicken tenders.
Was really happy with this place.
— Very
— Gluten-free items are marked on the main menu
— Most/All
— Excellent