01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease it.
02 - Pat the salmon fillets dry with paper towels and arrange them on the prepared baking sheet, skin side down if using skin-on fillets.
03 - In a small bowl, whisk together olive oil, lemon juice, lemon zest, chopped dill, minced garlic, sea salt, and freshly ground black pepper.
04 - Brush or spoon the marinade evenly over each salmon fillet.
05 - Place a lemon slice atop each fillet.
06 - Bake in the preheated oven for 15 to 18 minutes, until the salmon flakes easily with a fork and appears opaque in the center.
07 - Remove from oven, garnish with extra dill sprigs as desired, and serve immediately.