The style is not original but it comes from Italy. I guess then developed into other, but the origin of that style are from Italy as the link says, not me.<quoted text>
The name APIZZA originates from Neapolitan dialect, but the style is original.
"...What sets New Haven-style pizza apart from other styles is its thin crust. Brick or occasionally high temperature gas oven cooking bakes the crust to a very crispy shell (often burnt black in spots, desirably known as "the char") but leaves the inside soft....New Haven-style pizza is traditionally baked in a coal-fired oven and is sold whole rather than by the slice."
They claim the hamburger was invented in New Haven as well. Though not in the pizza places.
I used to live literally 1 block from the street with most of the famous pizza places in New Haven. There are 5 or 6. Everyone has their favorite.
"New Haven-style pizza, locally known as apizza, is a STYLE of NEAPOLITAN PIZZA common in and around New Haven Connecticut. It originated at FRANK PEPE PIZZERIA NAPOLETANA"
If you click over the words "Neapolitan Pizza" and "Frank Pepe Pizzeria Napoletana", all you will read is Italy.