Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Trim the woody ends off the asparagus and toss the spears with one teaspoon of olive oil, half the sea salt, half the black pepper, and all of the garlic powder.
Spread the asparagus in a single layer on the prepared baking sheet and roast for 10 to 12 minutes until tender and slightly charred.
While the asparagus roasts, pat the salmon fillet completely dry with paper towels to ensure a better sear.
Season the flesh side of the salmon with the remaining sea salt and black pepper.
Heat the remaining teaspoon of olive oil in a stainless steel or cast iron skillet over medium-high heat until the oil shimmers.
Place the salmon skin-side down in the skillet and press gently with a spatula for 30 seconds to prevent curling.
Sear the salmon for 4 to 5 minutes until the skin is golden and crispy, then flip and cook for an additional 2 to 3 minutes until the fish is opaque and flakes easily.
Plate the crispy salmon alongside the roasted asparagus and finish with a bright squeeze of fresh lemon juice over everything.