What state does Round Table Pizza and Peter Piper Pizza have in common?
Round Table Pizza Round Table Pizza is a large chain of pizza parlors in the western United States. The company's headquarters are located in Concord, California.
Sam Panopoulos Sotirios "Sam" Panopoulos (Greek: Σωτήριος Πανοπούλος ; 20 August 1934 – 8 June 2017) was a Greek-born Canadian cook and businessman, credited as the inventor of Hawaiian pizza.