Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Trim the woody ends off the asparagus and cut the broccoli into bite-sized florets.
Toss the broccoli and asparagus on the baking sheet with half of the olive oil and a pinch of sea salt and black pepper.
Roast the vegetables for 12 to 15 minutes until they are tender and slightly charred at the edges.
While the vegetables roast, pat the salmon fillet dry with a paper towel and season both sides with garlic powder, sea salt, and black pepper.
Heat the remaining olive oil in a high-quality non-stick skillet over medium-high heat until the oil is shimmering.
Place the salmon in the pan, skin-side down, and sear for 4 to 5 minutes without moving it to ensure the skin becomes golden and crispy.
Carefully flip the salmon and cook for another 2 to 3 minutes, or until the center is just opaque and the internal temperature reaches your preference.
Plate the salmon alongside the roasted vegetables and finish with a fresh squeeze of lemon juice over everything.