Preheat the broiler or grill.
Position the rack 4 inches from the heat source. Lightly spray a baking pan with cooking spray. Place the fillets in the pan.
Sprinkle the lemon juice, garlic, herbed seasoning and pepper over the fillets. Broil or grill until the fish isn't transparent throughout, called opaque, when tested with the tip of a knife, about 8 to 10 minutes.
Serve right away.