Let the salmon sit at room temperature for 10 minutes before you bake it.
Position the rack in the center of the oven and preheat it to 375 F.
To a small saucepan over medium heat, add the lemon juice and garlic. Allow the mixture to cook until the lemon juice has reduced by half. Add half of the butter and swirl until it has melted, remove the pan from the heat, and add in the second half of the butter. Swirl until the remaining butter has melted from the residual heat.
Cover a rimmed baking sheet with aluminum foil (you need enough that you’ll be able to fold the edges over and create a tight seal). Place the salmon skin side down in the center of the foil, then sprinkle with salt and pepper. Pour the butter mixture over the salmon, and seal the aluminum foil.
Bake for 15 - 18 minutes, or until the salmon is nearly cooked through. Open the foil pack, turn the oven to broil, and broil for 2 minutes (or until the top has golden edges and is crispy - keep a close eye on it so it doesn’t burn).
Sprinkle with fresh diced parsley, and serve hot.