Domino's offers a GF 10" crust that is pretty tasty. I don't feel like it's a step down from the regular crust at all.
Have ordered multiple times and there has been a couple of times when the order was wrong. E.g. mushrooms paid for but not added. So beware, check your order before you leave.
— Not very
— Gluten-free items are marked on the main menu
— Not Much
— Excellent