Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Trim the woody ends off the asparagus spears and place them on one side of the prepared baking sheet.
Drizzle the asparagus with 1 teaspoon of olive oil and season with a 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.
In a small bowl, whisk together the remaining 1 teaspoon of olive oil, dried parsley, dried dill, garlic powder, and the remaining salt and pepper.
Spread the herb mixture evenly over the top of the salmon fillet, pressing it gently into the flesh to form a crust.
Roast for 12 to 15 minutes until the salmon is opaque and flakes easily with a fork, and the asparagus is tender and slightly charred.
Finish the dish with a bright squeeze of fresh lemon juice over the salmon and asparagus before serving hot.