If you wanted pizza to be "italian", it would have to have no tomatoes, peppers, pepperoni, buffalo milk cheese, basil or a whole bunch of other ingredients that are commonly added to pizza.
And I don't see them serving Panda Express in Beijing. The point is not authenticity it's that different cultures take what they perceived to be another culture's food and bend it to their preferences.
But mostly I was making a joke because of its name.