Preheat: Get your oven to 400°F ($200^circtext{C}$). Line a baking tray with parchment paper for easy cleanup.
Infuse the Fish: In a small bowl, whisk together the olive oil, lemon juice, minced garlic, salt, and pepper. Rub this mixture onto the salmon fillets and place them on the tray.
Apply the Glaze: Using a pastry brush or the back of a spoon, apply a very thin, even layer of honey over the top of each fillet. This acts as our "glue."
The Crunch Factor: In a separate bowl, mix your chopped walnuts with paprika, salt, dried herbs, and the optional lemon zest.
Crust it: Gently press the walnut mixture onto the honey-glazed tops. The honey will hold the nuts in place.
Bake: Roast for 17-20 minutes. You'll know it's ready when the salmon flakes easily with a fork and the walnut crust looks toasted and golden.