To Prepare Pineapple Chili Salsa:
Grill the pineapple rounds over the sear burner turning to develop grill marks. Dice the grilled pineapple on a cutting board and mix in a bowl with lime zest, lime juice, jalapeño chili, chives and red pepper. Set aside.
To Prepare the Mahi Mahi:
Coat the Mahi Mahi with Jerk seasoning. Set the grill to medium high heat. Using a piece of paper towel soaked with oil, rub the grates in order to help prevent sticking. Cook the Mahi Mahi for 4 to five minutes per side, turning once, until the fish is cooked though. Serve with pineapple chili salsa.