Pat the tilapia fillets dry with paper towels. Season both sides with salt and pepper.
Heat the olive oil in a large skillet over medium-high heat.
Place the tilapia fillets in the hot skillet and cook for 3-4 minutes per side, or until golden brown and cooked through. Avoid overcrowding the pan; cook in batches if necessary.
While the fish is cooking, prepare the sauce. In a small saucepan, melt the butter over medium heat. Add the minced garlic and cook until fragrant, about 1 minute.
Stir in the lemon juice and chopped parsley. Season with a pinch of salt and pepper if desired.
Remove the tilapia from the skillet and place it on a serving plate. Spoon the lemon butter sauce over the fish.
Notes
Serve immediately with your favorite sides like rice or steamed vegetables.