Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Halve the baby potatoes and trim the tough, woody ends off the asparagus spears.
In a small bowl, whisk together the olive oil, minced garlic, lemon zest, lemon juice, rosemary, thyme, salt, and pepper.
Place the chicken breast, halved potatoes, and asparagus on the sheet pan in a single layer.
Drizzle the lemon-herb oil mixture over the chicken and vegetables, tossing the produce and coating the chicken thoroughly.
Roast in the center of the oven for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F and the potatoes are fork-tender.
Remove from the oven and let the chicken rest for 5 minutes before slicing to ensure it stays juicy and flavorful.