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. Arrange them on the prepared baking sheet, ensuring the skin side is down if using skin-on fillets.
03 - In a small bowl, combine olive oil, lemon juice, lemon zest, chopped fresh dill (or dried dill), minced garlic, sea salt, and freshly ground black pepper.
04 - Brush or spoon the prepared mixture evenly over the salmon fillets.
05 - Place one lemon slice on top of each salmon fillet.
06 - Bake for 15 to 18 minutes, or until the salmon flakes easily with a fork and is just opaque in the center.
07 - Remove the salmon from the oven. Garnish with extra fresh dill sprigs if desired. Serve immediately.