Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Trim the woody ends off the asparagus and place the spears on the prepared baking sheet.
Drizzle the asparagus with olive oil and sprinkle with half of the sea salt and black pepper, tossing to coat evenly.
Roast the asparagus in the oven for 12 to 15 minutes, or until tender and slightly charred at the tips.
While the asparagus roasts, pat the salmon fillets completely dry with a paper towel and season with the remaining salt and pepper.
Heat the ghee in a large stainless steel or cast iron skillet over medium-high heat until it is shimmering but not smoking.
Place the salmon in the pan, skin-side up, and sear undisturbed for 4 to 5 minutes until a deep golden crust has developed.
Carefully flip the fillets and continue cooking for another 3 to 4 minutes, or until the salmon reaches your desired level of doneness.
Mince the garlic and toss it with the roasted asparagus during the last 2 minutes of oven time for a fragrant finish.
Serve the salmon immediately alongside the roasted asparagus, finishing both with a generous squeeze of fresh lemon juice.