Preheat your oven to 400°F and line a large rimmed baking sheet with unbleached parchment paper for easy cleanup.
Trim the tough, woody ends from the asparagus spears and arrange them in a single layer on one side of the prepared baking sheet.
In a small mixing bowl, combine the almond flour, lemon zest, finely chopped parsley, chopped dill, garlic powder, sea salt, and black pepper until well incorporated.
Pat the salmon fillet dry with a paper towel, place it on the other side of the baking sheet, and brush the top with half of the extra virgin olive oil.
Firmly press the almond-herb mixture onto the top of the salmon fillet to create an even, textured crust that will lock in moisture.
Drizzle the remaining olive oil over the asparagus spears and toss them lightly to ensure they are evenly coated for roasting.
Roast for 12 to 15 minutes, depending on the thickness of the fillet, until the salmon is opaque and flakes easily with a fork while the crust is beautifully toasted.
Finish the dish by drizzling the fresh lemon juice over both the salmon and the asparagus just before serving for a bright, citrusy pop.