Seconding this - mine turned out to be an intolerance to cows milk (specifically, the casein).

This was incredibly nerdy and I loved every second of it

When I make my own pizza I use the spare sauce as a dip. Bit of olive oil and fresh basil over the whole thing makes the crust pretty much as nice as the rest.

Also for the stuffed I think you have to do more of a burrito roll type thing so that the edge is trapped by the weight of the stuffing.