Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Trim the woody ends off the asparagus spears and place them on the prepared baking sheet.
Drizzle the asparagus with half of the olive oil and season with a pinch of the sea salt and black pepper.
Roast the asparagus for 10-12 minutes until tender but still vibrant green.
While the asparagus roasts, pat the salmon fillet completely dry with a paper towel to ensure maximum crispiness.
Season the salmon on both sides with the remaining sea salt, black pepper, and garlic powder.
Heat the remaining olive oil in a non-stick or cast-iron skillet over medium-high heat until shimmering.
Place the salmon skin-side down in the pan, pressing gently with a spatula for 30 seconds to prevent curling.
Sear for 4-5 minutes without moving it until the skin is golden and crispy, then flip and cook for an additional 2-3 minutes.
Plate the crispy salmon alongside the roasted asparagus and finish with a fresh squeeze of lemon juice.