Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Trim the tough, woody ends off the asparagus spears and place them on one side of the prepared sheet pan.
Place the chicken breast on the other side of the pan, ensuring there is space between the chicken and the vegetables.
In a small ramekin, whisk together the extra virgin olive oil, minced garlic, dried rosemary, dried thyme, sea salt, and black pepper.
Brush the herb oil mixture generously over both sides of the chicken breast and drizzle the remaining oil over the asparagus, tossing the spears to coat evenly.
Thinly slice half of the lemon and lay the rounds over the chicken breast and asparagus spears.
Roast in the center of the oven for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the asparagus is tender.
Remove from the oven and squeeze any remaining lemon juice over the dish before serving warm.