The dough is made with chickpea and rice flour, as well as all the familiar GF starches. It tastes like a nutty whole-wheat crust, and serves as a neutral backdrop for toppings. Mine didn't char like the traditional crust, but it held together and supported toppings without becoming a brick.
The gluten-free dough is handled carefully and cooked on its own tray, but cross-contamination is possible (there is a lot of flour flying around back by the oven). Flatbread also carries brownies and whoopie pies that are gluten-free but not vegan. I can't imagine why these gluten-free options aren't on the menu; I avoided Flatbread for almost a year because I thought they couldn't feed me.
As far as I know, Flatbread Company is the only place in Maine where you can order a gluten-free vegan pizza. Not only is it delicious, you can eat it while waiting for seals to pop their heads up beside the dock. I'll be back!