Preheat your oven to 400°F (200°C) and line two large sheet pans with parchment paper to ensure even cooking for all 8 servings.
Trim the tough, woody ends off the asparagus spears and divide them evenly across the sheet pans.
Slice the salmon into eight 7-ounce portions and place them onto the pans, leaving space between each fillet and the asparagus.
In a small glass jar, whisk together the extra virgin olive oil, minced garlic, sea salt, and black pepper until well combined.
Drizzle the oil mixture over the salmon and asparagus, using your hands or a brush to ensure everything is lightly and evenly coated.
Thinly slice one lemon and place a round on top of each salmon fillet; roast in the oven for 12-15 minutes until the salmon flakes easily with a fork.
While the salmon rests, finely chop the fresh parsley and dill and juice the second lemon.
Drizzle the fresh lemon juice over the entire pan and garnish generously with the chopped herbs before serving one fillet and a portion of asparagus per plate.