Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Trim the tough, woody ends off the asparagus spears and spread them out on one side of the prepared baking sheet.
Drizzle the asparagus with the extra virgin olive oil and season with a pinch of the sea salt and black pepper.
Pat the salmon fillet completely dry with a paper towel and place it on the other side of the baking sheet.
Spread the Dijon mustard in an even layer over the top surface of the salmon fillet.
In a small bowl, whisk together the almond flour, garlic powder, dried parsley, and the remaining salt and pepper.
Carefully press the almond flour mixture onto the mustard-coated salmon to create a thick, even crust.
Place the baking sheet in the oven and roast for 12 to 15 minutes, or until the salmon flakes easily with a fork and the asparagus is tender.
Remove from the oven and squeeze the fresh lemon juice over both the salmon and the asparagus before serving.