Preheat your oven to 400°F and line a large sheet pan with parchment paper for easy cleanup.
Scrub the sweet potato and cut it into 1-inch cubes, keeping the skin on for extra fiber and nutrients.
In a small bowl, whisk together the extra virgin olive oil, lemon juice, minced garlic, rosemary, thyme, salt, and pepper.
Place the chicken breast and sweet potato cubes on the prepared pan and drizzle with the herb-oil mixture, tossing to coat everything evenly.
Roast in the center of the oven for 15 minutes.
Remove the pan and add the asparagus spears, rolling them in the flavorful pan juices to coat.
Return the pan to the oven for another 10 to 12 minutes until the chicken reaches an internal temperature of 165°F and the potatoes are fork-tender.
Allow the chicken to rest for 5 minutes before slicing to ensure it stays juicy and tender.