01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease it.
02 - Arrange the salmon fillets on the prepared baking sheet.
03 - In a small bowl, mix the olive oil, lemon juice, lemon zest, minced garlic, thyme, salt, and pepper.
04 - Brush the mixture evenly over the salmon fillets.
05 - Place lemon slices on top of each fillet.
06 - Bake for 15–18 minutes, or until the salmon flakes easily with a fork and is just opaque in the center.
07 - Remove from the oven and let rest for 2 minutes. Garnish with chopped parsley if desired. Serve immediately.