Take the pineapple chunks, wrap them in bacon, hold them together with toothpicks, and you're done with preparation.
In and offset firebox smoker, they'll be done in around 2 hours at 250 degrees F. If you're doing them on a charcoal grill, they need to be watched and turned so nothing burns.
A year or so ago I served these to a bunch of folks at a large gathering. I had underestimated the number of folks who would show up for supper. Even so, I figured one or two per person would be enough. I was wrong. They were all devoured, leaving none for Linda and I! And, I got requests to do it again next time.