Rub flesh side of salmon portions with olive oil. Season with salt and pepper.
Pour over salmon portions in a shallow dish or gallon sized plastic bag. Let marinate 30 minutes.
Preheat an outdoor grill to high heat, about 500 degrees F.
Place the salmon skin side up over direct heat on the grill. Close the lid and let cook 3 to 4 minutes until grill marks form.
Use tongs or a spatula to gently flip the salmon skin side down. Either reduce the heat to medium for a gas grill, or to indirect heat for charcoal. The salmon should release easily from the grill grates. Continue cooking with the lid close for another 4 minutes until salmon is cooked through and easily flakes with a fork. Salmon needs to be cooked to an internal temperature of 145 degrees F.
Serve salmon with lemon wedges to squeeze over just before eating.