Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Trim the woody ends off the asparagus spears and place them on the baking sheet, tossing with 1 teaspoon of olive oil and a pinch of sea salt and black pepper.
Roast the asparagus for 12-15 minutes until tender and slightly charred at the tips.
While the asparagus roasts, pat the salmon fillet completely dry with a paper towel to ensure a perfect sear.
Season both sides of the salmon with the remaining sea salt, black pepper, and garlic powder.
Heat the remaining 1.25 teaspoons of olive oil in a high-quality non-stick skillet over medium-high heat until the oil is shimmering.
Place the salmon skin-side down in the hot pan and press down lightly with a spatula; sear for 4-5 minutes without moving it to develop a golden, crispy skin.
Carefully flip the salmon and cook for an additional 2-3 minutes until the flesh is opaque and flakes easily with a fork.
Plate the salmon alongside the roasted asparagus and finish with a fresh squeeze of lemon juice over the entire dish.