I just had lunch at Portland Pie Company in Portland, ME for the first time, and their gluten free pizza is absolutely phenominal. It’s expensive at $13 for a 9 or 10″ pizza, but it’s loaded with toppings and is actually filling, which can be a problem with GF crusts. It’s also got exactly the spongey flexible feel that most GF pizzas lack, which seats it comfortably as the best GF pizza I know of. If you live in the Portland area (or Scarborough or Westbrook) go there and buy lots so they keep it on the menu.
Snickers don’t contain any gluten in the ingredients, which is typically all I care about. I don’t have celiac disease, just a gluten sensitivity, so I typically don’t worry TOO much about cross contamination. I just had a Snickers, though, and my stomach hates me now which is fair warning that if you have even the mildest sensitivity, you should probably avoid them unless you don’t mind getting sick.