Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Snap the woody ends off the asparagus spears and toss them on the baking sheet with half of the olive oil, sea salt, and black pepper.
Roast the asparagus in the oven for 10 to 12 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 the skin gets extra crispy.
Season both sides of the salmon 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 the oil is shimmering.
Place the salmon skin-side down in the hot pan and press down gently with a spatula for 10 seconds to prevent curling.
Sear the salmon undisturbed for 4 to 5 minutes until the skin is golden and releases easily from the pan.
Carefully flip the fillet and cook for another 2 to 3 minutes until the fish is opaque and reaches your desired level of doneness.
Serve the salmon immediately alongside the roasted asparagus with a fresh squeeze of lemon juice over the top.