Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Pat the Alaskan cod fillets very dry with paper towels to ensure the herb topping adheres properly and the fish doesn't steam.
In a small bowl, whisk together the extra virgin olive oil, finely chopped parsley, chopped dill, garlic powder, sea salt, and black pepper.
Place the cod fillets and the trimmed asparagus spears on the prepared baking sheet.
Brush the herb oil mixture generously over the top of the cod and toss the asparagus lightly with the remaining oil on the pan.
Slice half of the lemon into thin rounds and place them on top of the cod fillets; reserve the other half for serving.
Bake for 12 to 15 minutes, or until the cod is opaque and flakes easily with a fork and the asparagus is tender-crisp.
Serve the herb-baked cod and roasted asparagus over the warm cooked quinoa, finishing with a final squeeze of fresh lemon juice.