Pizza has been a staple of the American diet since the late 19th century and has grown into a multibillion-dollar industry.

Stacker examined PMQ Pizza Magazine's 2025 Pizza Power report to round up the 30 biggest pizza chains nationwide based on ...

For example, pepperoni, sausage, mushroom, and extra cheese ... Marco's Pizza in 1978 in Oregon, Ohio, he applied his Italian heritage to the recipes and menu. The franchise continues the same ...