01 - Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper or lightly grease the surface.
02 - In a small bowl, whisk together Dijon mustard, olive oil, lemon juice, lemon zest, minced garlic, honey, thyme, salt, and black pepper until well blended.
03 - Place salmon fillets skin side down on the prepared baking sheet. Pat fillets dry with paper towels for optimal browning.
04 - Generously brush the lemon Dijon mixture over each salmon fillet, ensuring all surfaces are evenly coated.
05 - Top each glazed fillet with a lemon slice for aromatic infusion.
06 - Bake on the middle rack for 15 to 18 minutes, or until salmon flakes easily with a fork and internal temperature reaches 145°F (63°C).
07 - If desired, sprinkle with chopped fresh parsley and serve immediately.