For a deeper smoky flavor, try using wood chips like hickory or mesquite in a smoker box or foil packet on your grill. If you don't have an outdoor grill, you can use a grill pan on your stovetop or even broil the pineapple in the oven. Adjust the amount of Tajin seasoning to your liking. For extra spice, use Tajin Habanero or add a pinch of cayenne pepper. Serve grilled pineapple as a side dish with grilled meats or fish, or as a dessert with a scoop of vanilla ice cream or a dollop of whipped cream.