Update: they have come a long way. They have a list (not a menu. Literally a list) and are able to steer to safer items. I have eaten twice in past few months and had no issues.
Original: Do not eat here. Told by multiple staff that Big Boy is not safe for those needing to be gluten free. It’s a shame because eating here is part of my parents routine and I have to miss out when I visit them.
— No gluten-free information on the menu