01 - Toss shrimp with 1 tablespoon olive oil, salt, and black pepper in a medium bowl. Set aside until ready to cook.
02 - Combine parsley, cilantro, garlic, olive oil, red wine vinegar, oregano, red pepper flakes, salt, and black pepper in a separate bowl. Stir well and allow to rest for 10 minutes for flavors to meld.
03 - Heat a large skillet over medium-high heat. Add shrimp in a single layer, cooking in batches if necessary. Sear for 2–3 minutes per side until opaque and lightly golden.
04 - Transfer cooked shrimp to a bowl and toss immediately with half of the chimichurri sauce, coating evenly.
05 - Serve shrimp warm, drizzled with remaining chimichurri sauce. Accompany with lemon wedges if desired.