01 - Preheat oven to 400°F. Line a baking sheet with parchment paper or foil.
02 - In a small bowl, whisk together olive oil, minced garlic, lemon zest, lemon juice, salt, black pepper, and paprika.
03 - Arrange asparagus spears in a single layer on one side of the baking sheet. Drizzle with half of the marinade and toss to coat.
04 - Place salmon fillets skin-side down (if using skin-on) on the other side of the baking sheet. Brush generously with the remaining marinade.
05 - Roast in the oven for 15–18 minutes, or until the salmon flakes easily with a fork and the asparagus is tender-crisp.
06 - Optionally, broil for 1–2 minutes to lightly brown the tops.
07 - Remove from the oven, garnish with lemon slices and parsley, and serve immediately.