Rome Actually Has Two Unique Pizzas
Roman pizza is not just one thing. It comes in two distinct forms: the thin, crispy tonda romana and the rectangular pizza al taglio sold by weight.
Most people expect a single style, but Rome splits its pizza personality. Tonda romana is rolled out until it is paper-thin and crunchy, designed to be eaten as a whole pie. Meanwhile, pizza al taglio is baked in large rectangular trays and cut with scissors to order. This style is sold by weight, allowing locals to sample many different toppings at once.
Source: Roman pizza