01 - In a large bowl, combine shrimp with olive oil, minced garlic, kosher salt, black pepper, and lemon zest. Toss to coat evenly and let marinate for 10 minutes while you preheat the grill to medium-high heat.
02 - Thread marinated shrimp onto skewers, leaving a small space between each piece for even cooking. Reserve any remaining marinade in the bowl.
03 - In a small saucepan over medium heat, melt butter with olive oil. Add capers and cook for 1 minute until fragrant. Pour in white wine and lemon juice; simmer for 2 minutes until slightly reduced. Remove from heat and stir in fresh parsley.
04 - Place skewers on the preheated grill and cook for 2-3 minutes per side until shrimp turn opaque and develop light char marks. During the final minute, brush generously with piccata sauce for extra flavor.
05 - Transfer skewers to a serving platter. Drizzle with remaining piccata sauce and sprinkle with additional chopped parsley. Accompany with fresh lemon wedges for squeezing.