Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Trim the woody ends off the asparagus spears and place them on one side of the baking sheet.
Drizzle the asparagus with olive oil and season with half of the sea salt and black pepper, tossing to coat evenly.
In a small mixing bowl, combine the almond meal, lemon zest, dried parsley, dried dill, and the remaining salt and pepper.
Place the salmon fillet on the other side of the baking sheet and spread the Dijon mustard evenly over the top of the fish.
Press the almond-herb mixture firmly onto the mustard layer to create a thick, even crust.
Bake for 12 to 15 minutes, depending on the thickness of the fillet, until the salmon is flaky and the crust is lightly golden.
Serve immediately while the asparagus is tender-crisp and the salmon is warm.