01 - In a medium bowl, toss the shrimp with 1 tablespoon olive oil, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Set aside while preparing the sauce.
02 - In a separate bowl, combine parsley, cilantro, garlic, 1/3 cup olive oil, red wine vinegar, oregano, red pepper flakes, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Stir well and let sit for 10 minutes to meld flavors.
03 - Heat a large skillet over medium-high heat. When hot, add the shrimp in a single layer, working in batches if necessary. Sear for 2-3 minutes per side until opaque and lightly golden.
04 - Transfer the cooked shrimp to a bowl. Toss immediately with half of the chimichurri sauce, coating evenly.
05 - Serve the shrimp warm, drizzled with remaining chimichurri sauce. Accompany with lemon wedges if desired.