01 - In a mixing bowl, combine the chopped parsley, cilantro, minced garlic, diced shallot, olive oil, red wine vinegar, dried oregano, red pepper flakes, smoked paprika, lemon zest, salt, and black pepper. Stir thoroughly until all ingredients are evenly incorporated.
02 - Transfer 1/3 cup of the chimichurri sauce to a small bowl and set aside for finishing the dish.
03 - Add the peeled and deveined shrimp to the remaining chimichurri sauce, tossing to coat evenly. Cover and refrigerate for 10 to 15 minutes to allow the flavors to penetrate.
04 - Heat a grill or grill pan over medium-high heat until thoroughly preheated and ready for cooking.
05 - Thread the marinated shrimp onto skewers. Place on the hot grill and cook for 2 to 3 minutes per side, turning once, until the shrimp are pink, opaque, and lightly charred.
06 - Remove the shrimp from the grill and arrange on a serving platter. Drizzle with the reserved chimichurri sauce and garnish with lemon wedges and freshly chopped parsley. Serve immediately.