So, a Greek guy in Canada made an Italian staple into something that he thought would represent a Hawaiian cuisine (even though it was just the can, many people naively believe it truly is a Hawaiian dish)
Once someone told me they thought that’s how they ate their pizza over there. Lol.
Nevertheless, if I were in Canada at that time, I would have visited his restaurant and ordered one of the originals. It’s not the best pizza topping but it is also not the worst. (I hate anchovies, fish of any kind or mushrooms on my pizza. Mushrooms are good in other dishes.)
In Germany, the traditional Toast Hawaii has a cherry on top. It was invented 7 years before the Pizza Hawaii, so it could likely be that the pizzerias back in the day were orienting their recipe more on the original than today.