That Heinz stuff, just no.
I am also in the camp of no on ham and pineapple on pizza.
We make 3-mustard marinated and sauced grilled chicken that pairs quite nicely with cantaloupe and honeydew melons.
Craig and I both cannot stand watermelon and feta, but lots of people apparently like it so...
I love a peanut butter and banana sandwich on fresh white or honey wheat bread. But, add butter and grill it, no. It becomes nothing more than a big bite of oily, greasy mess. This was a sandwich made famous by Elvis. He was said to have added fried bacon too, but I have never wanted to try that.
SandwichShortOfAPicnic 's son would probably like the plain PB&B sandwich, if he likes bananas, since he likes PB&Js.
Jello with marshmellows mixed in, regardless of what else is used, is a huge no.
I don't even like looking at ambrosia. Didn't even like it as a kid. I thank all dieties that it and jello salads are rarely seen anymore.