Preheat the grill to medium. Lightly coat the grill with oil.
Heat the olive oil in a small skillet set over medium heat. Stir in the chili powder and cumin. When the mixture starts to sizzle, slowly pour in the pineapple concentrate.
Simmer until the glaze reduces to about 2 tablespoons. Remove from the heat and let it cool slightly.
Season the pork chops on both sides with salt and pepper. Rub the glaze over the pork chops.
Place the pork chops on the grill. Cook for 3 minutes on the first side, flip and cook until the pork chops are just cooked through, about 2 minutes.
Serve.
Notes
From the kitchen of Cookin' Canuck | cookincanuck.com | Glaze recipe slightly adapted from Food & Wine Magazine