I know you asked last March --- but here's one recipe I do with pineapple...VERY simple and VERY good!
Slice pineapple into wedges....remove the core
Mix 1 cup sugar with either lemon or lime zest (doesn't matter how much) ---- in a plastic bag. You can squish it around until the zest is mixed in good.
Dredge the pineapple in the sugar mixture till coated and lay out on wax paper on a cookie sheet. Pop it on the BBQ along with your meat and cook till warmed thru. Sometimes you'll get a nice brown "crust". It's yummy!!!