Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Wash the asparagus and snap off the woody bottom ends, then place the spears on one side of the prepared baking sheet.
Drizzle the asparagus with half of the olive oil and toss with a small pinch of the sea salt and black pepper.
Pat the salmon fillet dry with a paper towel and place it on the other side of the baking sheet.
Spread the Dijon mustard evenly over the top surface of the salmon fillet.
In a small mixing bowl, combine the almond flour, grated parmesan, dried parsley, garlic powder, and the remaining salt and pepper.
Press the herb and almond mixture firmly onto the mustard-coated salmon to create an even crust.
Drizzle the remaining olive oil over the top of the crust to help it brown in the oven.
Roast for 12 to 15 minutes, or until the salmon flakes easily with a fork and the asparagus is tender and slightly charred.
Remove from the oven and serve immediately with a fresh lemon wedge squeezed over the salmon.