You can get a good gluten free burger here with a bun. Been here several times over the past 5 years and haven't had any issues. The knowledge of gluten free varies with the wait staff, but they are willing to check with the kitchen to make sure your meal will be as safe as possible.
— Very
— Gluten-free items are marked on the main menu
— Not Much
— Excellent
No dedicated fryer and staff was not knowledgeable on gluten even after I showed him the menu online.
My Celiac wife wasn't with me at the time so I decided to risk coming here. I just planned on getting a lettuce wrapped burger but saw they have gluten-free buns for an additional buck. After eating I asked about their allergy practices and it turns out they have Dedicated Fryers and if there is an allergy tag on the order they clean the grill space prior to making your food. The waitress was not as knowledgeable about it (small town, not a lot of allergy requests) but was happy to look into it.