They have a dedicated fryer and GF buns. Everything that comes out GF has a purple stick on it so you know it's GF. They are really awesome about GF. They even gave our toddler GF fries since she was sitting in between myself and her sister (we both had Celiac) just in case she touched her fries and then touched our fries. The buns are pretty decent for GF... honestly they are probably the best GF buns I've had. They have a GF menu online which tells you what modifications you need to make for your meal to be GF
— Very
— Separate gluten-free menu
— Most/All
— Excellent