Prepare the Pineapple. Peel, core, and slice the pineapple into ½-inch thick rings or spears. If desired, brush lightly with lime juice and sprinkle a little brown sugar or honey for extra caramelization.
Preheat the Grill. Heat your grill to medium-high (about 400°F). Make sure the grates are clean and lightly oiled to prevent sticking.
Grill the Pineapple. Place the pineapple slices directly on the grill. Cook for 3–4 minutes per side, or until you see nice char marks and the fruit is tender. Flip carefully to avoid breaking the slices.
Add Optional Flavorings. Sprinkle cinnamon or chili powder over the pineapple while it’s still warm for a unique twist on flavor.
Serve. Transfer the grilled pineapple to a platter and serve warm. It’s delicious on its own, with ice cream, or as a topping for grilled meats or salads.