Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Pat the chicken breast completely dry with a paper towel to ensure the skin or surface gets crispy.
In a small bowl, whisk together the olive oil, lemon juice, lemon zest, rosemary, thyme, garlic powder, sea salt, and black pepper.
Place the chicken and halved baby potatoes on the sheet pan, then drizzle with two-thirds of the herb oil mixture, tossing the potatoes to coat evenly.
Roast the chicken and potatoes in the oven for 15 minutes.
Remove the pan from the oven, add the trimmed asparagus to the empty space, and drizzle with the remaining herb oil.
Return the pan to the oven and roast for an additional 10 to 12 minutes, or until the chicken reaches an internal temperature of 165°F and the potatoes are fork-tender.
Let the chicken rest for 5 minutes before slicing to keep it juicy, then serve immediately.