Preheat your oven to 400°F and line a large sheet pan with parchment paper for easy cleanup.
Halve the baby potatoes and slice the carrots into thin coins to ensure they cook evenly.
In a small mixing bowl, whisk together the extra virgin olive oil, lemon juice, minced garlic, rosemary, thyme, sea salt, and black pepper.
Place the chicken breast, potatoes, and carrots on the prepared sheet pan, then drizzle with two-thirds of the herb oil and toss thoroughly to coat.
Roast in the center of the oven for 15 minutes.
Remove the pan and add the asparagus spears, drizzling them with the remaining herb oil.
Return the pan to the oven and roast for another 10-12 minutes 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 alongside the roasted vegetables.