Pat the cod fillets dry with a paper towel to ensure a perfect golden sear.
In a small bowl, whisk together the sea salt, black pepper, garlic powder, and smoked paprika.
Season both sides of the cod fillets evenly with the spice blend, pressing gently so it adheres.
Heat the olive oil in a large non-stick skillet over medium-high heat until shimmering.
Carefully place the cod in the skillet and sear for 3-4 minutes until a deep golden crust forms.
Flip the fillets gently and cook for another 2-3 minutes until the fish is opaque and flakes easily with a fork.
While the fish cooks, steam the asparagus spears for 4-5 minutes until they reach a vibrant green, crisp-tender texture.
Remove the skillet from the heat, drizzle the fresh lemon juice over the fish, and sprinkle with the lemon zest.
Serve the golden cod immediately over the warm cooked quinoa with the steamed asparagus on the side.