One of the worst pizzas I've had in the last several years was in Italy.
Of course, that was in the crappy food court in the Vatican, sitting under warming lights for God knows how long*, and was only purchased because we were starving after having spent the last 36 hours either traveling, crashed in our hotel after traveling, or walking around the Vatican without having eaten anything because we were so jet lagged and in a hurry to get to our tour.
All the other pizzas we had in Italy were excellent. We ended up having pizza in Rome, the Cinque Terre, and Florence, and it was interesting to see the stylistic differences between the three places.
* It's the Vatican. I'd assume he would know.