This place is exceptional for a quick airport restaurant. It's open to the central food court in terminal 4 right next to the higher end Chelsea's Kitchen.
You walk up and order at the window - they have chalkboards flanking you with the current menu. The prices are extremely reasonable, and the quality is high by pizzeria standards, but exceptional for airport food.
The service is great, and we even had a waitress ask us if you wanted anything else, then she grabbed our card, took it up front, ran it, and brought us our food, though this didn't seem like standard procedure.
Tends to get pretty crowded at peak travel times, but we've always managed to find a table within a reasonable amount of time (first come first serve).
My coworkers and I have made this our regular hangout spot before flying out of a client in Phoenix, and it's likely to stay a staple.