In the cuisine of the United States, Greek pizza is a style of pizza crust and preparation where the pizza is proofed and cooked in a metal pan rather stretched to order and baked on the floor of the pizza oven. A shallow pan is used, unlike the deep pans used in Sicilian-American, Chicago, or Detroit-styled pizzas.
Sicilian pizza is pizza prepared in a manner that originated in Sicily, Italy. Sicilian pizza is also known as sfincione or focaccia with toppings. This type of pizza became a popular dish in western Sicily by the mid-19th century and was the type of pizza usually consumed in Sicily until the 1860s
California pizza, or gourmet pizza, is known for its unusual ingredients. This pizza got its start back in the late 1970’s when Chef Ed LaDou began experimenting with pizza recipes in the classic Italian restaurant, Prego. He created a pizza with mustard, ricotta, pate, and red pepper, and by chance, served it to Wolfgang Puck. Impressed with LaDou’s innovative pie, Puck invited him to be a head pizza chef at his restaurant. It was here that LaDou came up with over 250 unique pizza recipes that eventually formed the menu of the chain restaurant California Pizza Kitchen.