Line a large sheet pan with parchment paper for easy cleanup.
In a small bowl, whisk together olive oil, lemon juice, lemon zest, minced garlic, dried oregano, dried thyme, salt, and pepper.
Place the salmon fillets on one side of the sheet pan. Brush each fillet generously with the lemon herb mixture.
On the other side of the pan, arrange the trimmed asparagus. Drizzle the remaining lemon herb mixture over the asparagus and season with additional salt and pepper.
Place the sheet pan in the preheated oven and bake for 15-20 minutes, or until the salmon flakes easily with a fork and the asparagus is tender.
For an extra touch, broil the salmon and asparagus for an additional 2-3 minutes at the end of baking time to achieve a nice golden color.
Remove the sheet pan from the oven and garnish the salmon with lemon slices and freshly chopped parsley before serving.
Notes
For a crispy finish, broil for an additional 2-3 minutes.