It's not pizza. It's Priazzo.
I love that you're nostalgic for fast food. There's so much nostalgia on the net for 80s video games and movies (and we're better for it!) but fast food nostalgia is underrated.
We didn't get the Priazzo in Australia - today was the first I'd heard of it. But we did get the short lived Big Foot. It's interesting the hate America has for pineapple on pizza. I'm so used to the tang having grown up with it. But my kids having grown up with the internet and a healthy diet of American TV now join in on the "pineapple on a pizza is wrong" line.
I wasn't around yet when the priazzo went away, but it sounds like it was an amazing idea!