Preheat your oven to 400°F (200°C) to ensure even cooking and a caramelized crust.
Place the skin-on salmon fillet on the sheet pan, leaving space for the lemon slices. Pat the salmon dry with paper towels.
In a mixing bowl, combine the melted butter, honey, lemon juice, salt, and pepper. Whisk until well blended.
Using a spatula, generously brush the glaze over the salmon fillet, reserving some glaze for drizzling later.
Lay thin lemon slices on and around the salmon to infuse the fish with zesty flavor while roasting.
Place the sheet pan in the preheated oven and roast for 15-20 minutes, or until the salmon flakes easily and reaches an internal temperature of 145°F (63°C).
Once cooked, remove from the oven, drizzle with any remaining glaze, and sprinkle with parsley. Serve immediately.