Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Trim the tough, woody ends off the asparagus spears and place them on the baking sheet.
Drizzle the asparagus with half of the olive oil and season with the garlic powder and a pinch of the sea salt.
Roast the asparagus in the oven for 12 to 15 minutes until they are tender and slightly charred at the tips.
While the asparagus roasts, pat the salmon fillet completely dry with a paper towel and season both sides with the remaining sea salt and black pepper.
Heat the remaining olive oil in a medium non-stick skillet over medium-high heat until the oil is shimmering.
Place the salmon in the skillet skin-side down and press gently with a spatula for 10 seconds to ensure even contact.
Sear the salmon for 4 to 5 minutes without moving it until the skin is very crispy and golden.
Carefully flip the salmon and cook for an additional 2 to 3 minutes until the internal temperature reaches 145°F or your preferred doneness.
Plate the salmon alongside the roasted asparagus and serve immediately with a fresh squeeze of lemon juice over everything.