[Flabbibulin]

To chime in- I am not GF, but my wife is celiac, so I generally try a bite or slice of her pie whenever we order. I have tried a lot around Calgary and can say that the GF pizza that is closest to the non GF version is Spiros. The large majority of GF pizzas will be considerably thinner, crispier, and tougher than the regular version. Spiros is pretty close though with the same thickness, appearance, and texture as the regular. I would suggest that the average person would maybe not notice something was off if you didn't mention it was GF. Spiros is one of the few I am usually ok sharing a GF, as opposed to getting my own.

Off the top of my head, Howie's, Michael's, PZA, and Bow Tie are a few examples of places known for their GF pizza, but sorry- simply not as good to their regular. Btw, the 1st rule with ordering a GF pizza is asking if they make their own crust or if it is frozen. If it is frozen, usually tough to be any good.

Oh, and just to add as we decided to give another shot after several years- Tom's HOP, GF or regular, really kinda sucks.

edit- to add, the Neapolitan style GFs, such as Famoso and Una's are decent enough I guess, but usually very tough.