Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Pat the chicken breast completely dry with paper towels to ensure a beautiful golden-brown finish.
In a small bowl, whisk together the olive oil, minced garlic, juice from the half lemon, dried rosemary, and dried thyme.
Trim the woody ends off the asparagus and place them on one side of the baking sheet.
Place the chicken breast on the other side of the baking sheet and drizzle the herb oil mixture over both the chicken and the asparagus.
Use your hands or tongs to toss the asparagus until evenly coated, then season everything with sea salt and black pepper.
Roast in the center of the oven for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F.
Remove from the oven and let the chicken rest for 5 minutes before slicing to keep the meat juicy and tender.