This kind of food is very popular in the United States and Canada, but it is regarded as blasphemy and insult to traditional pizza in Italy and other places. Pizza is a delicious food that originated in Italy, but pineapple pizza was not invented by Italians. It was made by a Greek Canadian named Sam Panopoulos. He put canned pineapple in the pizza again and made this sweet and sour pizza. The brand of canned pineapple is Hawaii. Some pineapple pizzas are called Hawaiian pizzas.