Preheat your oven to 400°F. Trim the woody ends off the asparagus and toss the spears with olive oil, a pinch of sea salt, and black pepper on a parchment-lined baking sheet.
Roast the asparagus for 12-15 minutes until tender-crisp and slightly charred.
While the vegetables roast, pat the cod fillets very dry with paper towels to ensure a proper sear. Season both sides with garlic powder, sea salt, and black pepper.
Heat a large skillet over medium-high heat and add half of the ghee. Once the ghee is shimmering, place the cod fillets in the pan.
Sear the cod for 3-4 minutes without moving it, allowing a golden crust to develop. Carefully flip the fillets using a fish spatula.
Add the remaining ghee, lemon juice, and fresh dill to the pan. As the ghee melts, use a spoon to continuously pour the hot lemon-dill fat over the fish for another 2-3 minutes until the cod is opaque and flakes easily.
Place the warm cooked quinoa on a plate, top with the roasted asparagus, and nestle the cod on top. Drizzle all the remaining lemon-dill ghee from the pan over the entire dish.