Preheat the oven to 425°F (220°C) to ensure a hot environment for a crispy finish.
Pat the chicken breast dry with paper towels. In a small bowl, whisk together olive oil, lemon juice, minced garlic, fresh rosemary, fresh thyme, salt, and black pepper.
Marinate the chicken breast with the lemon herb mixture, ensuring it is evenly coated. Let it sit for 10-15 minutes.
While the chicken marinates, trim woody ends off the asparagus and toss with a drizzle of olive oil, salt, and pepper on a baking sheet.
Place the chicken breast on another baking tray lined with parchment paper. Roast both the chicken and asparagus in the preheated oven.
Roast the chicken breast for approximately 20-25 minutes or until the internal temperature reaches 165°F (75°C) and the skin is crispy. At the same time, roast the asparagus for 10-15 minutes until tender and lightly browned.
Remove the trays from the oven. Let the chicken rest for 5 minutes before serving to allow the juices to redistribute.
Plate the chicken breast with the roasted asparagus and drizzle any remaining pan juices over the top for extra flavor.