Place pork medallions and Chipotle Pineapple Marinade in a zip-top bag and marinate, refrigerated, for 1 hour.
Preheat grill to medium-high heat. Clean and grease the grill grates. Remove the pork medallions from the bag and discard the marinade. Cook, flipping every 3-5 minutes, for about 12 minutes until the pork is cooked through: 145°F.
Serve with extra Chipotle Pineapple Marinade as a sauce if desired.
