Preheat your oven to 400°F and line a large sheet pan with parchment paper for easy cleanup.
Wash and halve the baby potatoes, and trim the tough, woody ends off the asparagus spears.
Mince the garlic cloves and finely chop the fresh rosemary and thyme leaves.
In a small mixing bowl, whisk together the extra virgin olive oil, lemon juice, minced garlic, rosemary, and thyme.
Place the chicken breast and halved potatoes on the prepared sheet pan, then drizzle with two-thirds of the lemon-herb oil.
Season the chicken and potatoes with the sea salt and black pepper, tossing the potatoes to coat evenly.
Roast in the center of the oven for 15 minutes.
Remove the pan from the oven, add the asparagus spears to the empty spaces, and drizzle them with the remaining herb oil.
Return the pan to the oven and roast for an additional 10 to 12 minutes until the chicken reaches an internal temperature of 165°F and the potatoes are golden and tender.