I've been to Big Mamma's Boy three times now and for those of us who need to be g-free, this remains a great brunch place. No matter when you go, do NOT go in a hurry. Service here just might beat the record for being the slowest in town, and if the servers are feeling stressed they aren't above passing that stress on to you.
That said, I've never had a meal I didn't like here. The gluten free pizza is great, and it's nice to have a brunch with tasty gluten free options beyond asking for eggs benny without the muffin (and hoping they don't forget).
So, I'll give the place an A- for the food and a D for the service. Just stay patient and it's a nice enough place.