Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Pat the Alaskan cod fillets completely dry with paper towels to ensure the best texture after baking.
In a small glass bowl, whisk together the extra virgin olive oil, minced garlic, lemon juice, lemon zest, sea salt, and black pepper.
Arrange the cod fillets and trimmed asparagus spears on the prepared baking sheet in a single layer.
Drizzle the lemon-herb mixture over the fish and vegetables, using a brush to coat the cod evenly.
Bake for 12 to 15 minutes, or until the cod is opaque and flakes easily with a fork while the asparagus is tender-crisp.
Fluff the pre-cooked quinoa and divide it between plates, topping with the baked cod, asparagus, and a sprinkle of fresh parsley.