Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Trim the woody ends off the asparagus and toss the spears with half of the olive oil, half of the sea salt, and half of the black pepper.
Spread the asparagus in a single layer on the baking sheet and roast for 12 minutes until tender and slightly charred.
While the asparagus roasts, season the salmon fillet evenly with the remaining sea salt, black pepper, and the dried oregano.
Heat the remaining olive oil in a non-stick skillet over medium-high heat and sear the salmon for 4 to 5 minutes per side until the skin is golden and the center is cooked through.
In a small bowl, whisk together the lemon zest, lemon juice, and minced garlic to create the glaze.
Remove the salmon from the heat, drizzle with the lemon-garlic glaze, and serve immediately alongside the roasted asparagus.