Combine cider, soy sauce, garlic, and lemon juice.
Place pork chops in this marinade and let sit 15 minutes.
In the interim, brush pineapple slices with olive oil and then sprinkle with chopped mint.
Place pineapple slices on top rack of barbecue and let cook on medium heat about 20-25 minutes, turning half way through.
Remove pork chops, sprinkle with rosemary, salt, and pepper, and place on grill, cooking 10-12 minutes, again, also turning half way through cooking time.
Place 2 pineapple slices on top of each pork chop and serve.