5530 Windward Pkwy C310, Alpharetta, GA 30004
This place is great. Not only will they do a bunless burger for you (yeah, that sounds odd, but you cut it up like a ground steak), but they also have a gluten free bun for like a buck or two more. However, if you get it, I would suggest that you ask for extra sauce as it is a touch dry... or, at least, dryer than a regular bun.
131 S Main St, Alpharetta, GA 30009
They have a remarkable gluten free pizza crust! It's amazing.