Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Trim the tough, woody ends off the asparagus spears and place them on the baking sheet.
Mince the garlic clove and toss it with the asparagus, 1 teaspoon of olive oil, and a pinch of the sea salt and black pepper.
Spread the asparagus in a single layer and roast for 12 to 15 minutes until tender and slightly charred at the tips.
While the vegetables roast, pat the salmon fillet completely dry with a paper towel and season both sides with the remaining salt and pepper.
Heat the remaining 1 teaspoon of olive oil in a stainless steel or cast iron skillet over medium-high heat until the oil is shimmering but not smoking.
Place the salmon in the pan skin-side down and press firmly with a spatula for 10 seconds to prevent curling and ensure a crispy skin.
Sear undisturbed for 4 to 5 minutes, then carefully flip the fillet and cook for an additional 2 to 3 minutes until the internal temperature reaches 135°F.
Plate the salmon alongside the roasted asparagus and finish with a generous squeeze of fresh lemon juice over everything.