Big Momma's Boy is located in Cabbagetown (Wellesley and Parliament) 554 Parliament Street.
I've tried pizza from Magic Oven and Il Fornello and hands down I have to award Big Momma's Boy the first prize for best gluten free pizza in the city.
It's a thin crust. I don't know what they put in it but it melts in your mouth, it's very savoury and delicious. They also have a huge range of specialty pizzas and loads of gourmet toppings, alot of them are organic from a local farm.
My sister (who's a celiac) and I (a gluten intolerant/lactose intolerant) were really impressed with the option of being able to have your pizza gluten and lactose free. I think the big thing for us was this didn't taste like your typical gluten free baked food...it tasted like a regular thin crust pizza.
They also have alot of other gluten free meals on their menu.
Having those gluten free options combined with the cozy homey atmosphere, I highly recommend this place....in fact, I would highly recommend this place for the pizza alone.