It was nice to have GF buns and fries options for our family, though the buns were very dry. It was the end of the day when we were there so it may have been nicer at the start of the day or lunchtime. Not sure how good it would be for coeliacs but our youngest is super sensitive and was ok with her fries!
I went here for brunch and ordered an omelet, which would generally come with white-bread toast and seasoned potatoes. I alerted my server that I cannot eat gluten, garlic, or onions due to food intolerances. My server worked with me to swap french fries in for the seasoned potatoes (garlic and onion issue), but when my plate came out there were two pieces of white-bread toast on top of my omelet and there was a piece of onion that had been cooked into the corner of my omelet. Eat at your own risk.
I've eaten a good amount of their menu when I wasn't celiac. They have gf buns, but what really makes it worth the trip is the disco fries, so I can't really recommend it. But they make a decent burger and you can get a bun on it. (Can you have the fancy burgers with all the fixings? No. Will the waitress make you feel safe? Not particularly.) To be honest, I usually prefer getting Five Guys with a lettuce wrap across the street so I can get my fries, too.