The only time I've had the opportunity to travel internationally it was to Italy, and the pizza you got in bakeries in Florence, Abruzzo, Pisa and Venice looked more like Detroit - rectangular pans with a medium-thick "bread" with variations using cheese and simple toppings - usually just one, maybe two, and nothing that looks like what we call "pepperoni" in the US. Now, restaurants, which would be a more likely tourist destination, had the round pizzas - crust thicknesses varied a little, but never "cracker" or "deep dish". They also did the multi-topping thing, though I don't recall "pepperoni" there, either.
I preferred the stromboli or calzone, personally. I'm sure Betty would have enjoyed the culinary aspects of my trip, especially since I found good wine most places I went. Wouldn't have been surprised if she didn't also bum a Cuban off of me on the patio.