Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Trim the tough, woody ends off the asparagus spears and place them on the prepared baking sheet.
Drizzle half of the olive oil over the asparagus and season with a pinch of sea salt and black pepper, tossing to coat evenly.
Roast the asparagus in the oven for 12 to 15 minutes until they are tender and slightly charred at the tips.
While the vegetables roast, pat the salmon fillet completely dry with a paper towel to ensure a superior sear.
Season the salmon on both sides with the garlic powder and the remaining sea salt and black pepper.
Heat the remaining olive oil in a stainless steel or cast iron skillet over medium-high heat until shimmering.
Place the salmon skin-side down in the hot pan and press gently with a spatula for 10 seconds to ensure even contact.
Sear the salmon undisturbed for 4 to 5 minutes until the skin is golden and releases easily from the pan.
Flip the fillet and cook for another 2 to 3 minutes until the salmon is opaque and reaches your desired level of doneness.
Plate the crispy salmon alongside the roasted asparagus and finish with a generous squeeze of fresh lemon juice over everything.