Why pizza is called pizza?

Why pizza is called pizza?
Pizza
The word pizza was borrowed from Italian into English in the 1930s; before it became well known, pizza was called "tomato pie" by English speakers. Some regional pizza variations still use the name tomato pie.
***
Which country made pizza?
Who Invented Pizza - The History of 'Za - Streets of New York
Italy
But modern pizza, the flatbreads with tomato sauce, cheese, and toppings, was born along the western coast of Italy, in the city of Naples. Naples too has a long history, dating back to 600 B.C. when the Greeks first settled it. Over time, Naples became a thriving city on the water.
***
Who created pizza?
Who Invented Pizza? | Wonderopolis
That did start in Italy. Specifically, baker Raffaele Esposito from Naples is often given credit for making the first such pizza pie. Historians note, however, that street vendors in Naples sold flatbreads with toppings for many years before then.