Preheat your oven to 400°F and line a baking sheet with parchment paper.
In a medium bowl, toss the trimmed asparagus and sliced zucchini with half of the olive oil, minced garlic, salt, and pepper.
Spread the vegetables in a single layer on the baking sheet and roast for 12 to 15 minutes until tender and slightly charred.
While the vegetables roast, pat the salmon fillet dry with a paper towel and season both sides with salt and pepper.
Heat the remaining olive oil in a stainless steel or cast iron skillet over medium-high heat.
Place the salmon in the pan skin-side down and sear for 4 to 5 minutes until the skin is crispy and the flesh is cooked halfway through.
Carefully flip the salmon and cook for an additional 2 to 3 minutes until the internal temperature reaches 145°F.
Arrange the roasted vegetables on a plate, top with the pan-seared salmon, and finish with a bright squeeze of fresh lemon juice.