Actually, most gluten-free bakery items are pretty low in fiber because gluten-free grains tend to be lower in fiber than wheat (with the exception of gluten-free oats).
Google gluten free recipes and you are guaranteed to get tons of hits, as there are a lot of great recipes out there.
A great resource to try is gfmall.com/
As for pizza crust, I love the GF pizza crust from a local gluten-free bakery. I can't eat most GF pizza crusts available in the store because I'm allergic to eggs, so I was thrilled to discover a local bakery that makes egg-free gluten-free foods!