Preheat the oven to 400°F (200°C) and line a rimmed baking sheet with parchment paper or aluminum foil.
Pat the salmon fillets dry with a paper towel and place them skin-side down on the prepared baking sheet.
In a small bowl, whisk together the melted butter, minced garlic, fresh dill, fresh parsley, and lemon juice.
Generously brush or spoon the garlic-herb butter mixture evenly over the tops and sides of each salmon fillet. Season evenly with salt and black pepper.
Lay 1-2 thin lemon slices over the top of each salmon fillet.
Bake in the preheated oven for 12-15 minutes, or until the salmon is opaque and flakes easily with a fork.
For a lightly golden top, turn the oven to broil for the final 1 to 2 minutes of cooking.
Remove the salmon from the oven, cover loosely with foil, and let it rest for 5 minutes before serving.