Preheat the oven to 350°F/180°C
In a bowl, combine melted butter, garlic, lemon juice, and lemon zest. Set aside.
Add your tilapia to a baking pan season with salt, pepper, smoked paprika on both sides.
Pour the butter mixture over the fish, and use a pastry brush to distribute the butter mixture over the top of each piece.
Bake for 10-12 minutes, or until the internal temperature of the tilapia is 145°F/62°C. Place under the broiler for a couple of minutes if you wish to get some color on the fish.
Garnish with chopped parsley and fresh lemon slices.