I've been to Hopdoddy and it was really good. I got my burger on a GF bun, and had no issues with the fries. They have an gluten free menu on their website that was really helpful. I am looking forward to going back
Edited: I've been back three times since I left this review. They do a good job of letting the kitchen know when an allergy is present, and they announce the gluten free item before they drop it off. I've not gotten sick there and their food really good!
— Somewhat
— Separate gluten-free menu
— Most/All
— Excellent