01 - Pat shrimp dry using paper towels, then season evenly with salt and freshly ground black pepper.
02 - Heat 1 tablespoon of butter with olive oil in a large skillet over medium-high heat. Add shrimp in a single layer and cook 1–2 minutes per side, until pink and opaque. Remove shrimp and set aside.
03 - Lower heat to medium, add remaining 2 tablespoons butter and minced garlic to the skillet. Sauté garlic for 1 minute until fragrant without browning.
04 - Incorporate lemon zest, fresh lemon juice, and red pepper flakes if using; allow to simmer gently for 1 minute.
05 - Return shrimp and any accumulated juices to the skillet, toss to coat thoroughly in sauce, and warm through for 1–2 minutes.
06 - Remove from heat, sprinkle with chopped parsley, and plate immediately with lemon wedges alongside.