In a small bowl, combine the brown sugar, paprika, Italian herbs, salt, pepper and red pepper flakes. In a 1-gallon size resealable storage bag, toss the shrimp with the garlic-infused oil. Add the paprika mixture and toss to coat the shrimp. Refrigerate for one to four hours.
Thread shrimp onto skewers while heating grill to medium-high heat. Lightly oil the grill grates. Place skewers of shrimp on grill and grill 2 to 3 minutes per side.
Remove shrimp from skewers and squeeze fresh lemon juice over top. Serve with remaining lemon wedges.