In my experience, the lettuce and tomatoes are messy enough to really preclude eating it fast
Thanks for the links, ME, but the toppings really are straight-forward. In fact, I've been working on frying my own beans since you can get pounds of dried pinto beans for the same price as a small can. The taco pizzas I liked best were the seasoned the beans (no "pizza" sauce underneath - the seasoned beans *are* the sauce), but left the ground beed unseasoned.
The part that is still eluding me is the perfect crust to put it on.... which maybe I've found