I mean, you can put anything on a pizza, so it is the most logical "only food to eat".
Debates will still occur in thousands of years if pineapple is one of those things. My stance is that a pizza knows no boundaries.
One of my favourites (which my sister in law made me once, and I have made myself many times since) - marinated artichoke, jalapeno, and pineapple. If I add chicken and bbq sauce to it, it is one of my my most favourite things.