Prepare Scallops: Ensure that the scallops are thoroughly dried with paper towels. This helps achieve a nice sear when cooking.
Heat the Oil: In a large skillet, heat the olive oil over medium-high heat until shimmering, about 2 minutes.
Sear the Scallops: Place the scallops in the pan, making sure they aren't crowded. Cook for 2-3 minutes without moving them until a golden crust forms. Flip and cook for an additional 1-2 minutes until the scallops are opaque and cooked through. Remove from the skillet and set aside.
Sauté the Garlic: In the same skillet, add the minced garlic and red pepper flakes (if using). Sauté for about 30 seconds until fragrant and lightly golden, being careful not to burn the garlic.
Add Lemon Zest and Juice: Stir in the lemon zest and lemon juice, scraping up any browned bits from the bottom of the pan. Cook for another minute.
Return Scallops to the Skillet: Add the scallops back into the skillet, tossing gently in the lemon garlic sauce. Season with salt and pepper to taste.
Garnish and Serve: Remove from heat and sprinkle with fresh parsley. Serve immediately with lemon wedges on the side for an extra burst of flavor.