Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper.
Trim the woody ends off the asparagus spears and place them on one side of the prepared baking sheet.
Pat the cod fillets dry with a paper towel and place them on the other side of the sheet pan.
In a small bowl, whisk together the extra virgin olive oil, lemon juice, lemon zest, garlic powder, dried oregano, sea salt, and black pepper.
Drizzle the herb mixture evenly over both the cod fillets and the asparagus spears, tossing the asparagus slightly to coat.
Place the sheet pan in the oven and bake for 12 to 15 minutes, or until the cod is opaque and flakes easily with a fork.
While the fish bakes, warm the pre-cooked quinoa in a small saucepan or microwave.
Plate the cod and roasted asparagus over the bed of fluffy quinoa and garnish with extra lemon wedges if desired.