Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Trim the woody ends off the asparagus and place the spears on the baking sheet.
Drizzle the asparagus with 0.5 tbsp of olive oil and season with half of the sea salt and black pepper.
Roast the asparagus for 12-15 minutes until tender-crisp and slightly charred.
While asparagus roasts, pat the salmon fillet completely dry with a paper towel to ensure a crispy sear.
Season the salmon on both sides with the remaining sea salt, black pepper, and garlic powder.
Heat the remaining 0.5 tbsp of olive oil in a stainless steel or cast-iron skillet over medium-high heat.
Place the salmon in the pan, skin-side down, and press gently with a spatula for 10 seconds to prevent curling.
Sear the salmon for 4-5 minutes without moving it until the skin is golden and crispy.
Carefully flip the fillet and cook for another 2-3 minutes until the salmon is cooked to your preferred level of doneness.
Plate the salmon alongside the roasted asparagus and finish with a fresh squeeze of lemon juice over everything.