Question: what fast food restaurant has gluten free buns?
Answer: Arby's.
Boston Market.
Chick-fil-A (offers gluten-free buns and gluten-free french fries)
Chipotle Mexican Grill.
Five Guys (offers gluten-free fries)
In-N-Out Burger (offers gluten-free fries)
Shake Shack (offers gluten-free buns)