Preheat your oven to 400°F and line a large sheet pan with parchment paper for easy cleanup.
Halve the baby potatoes and trim the ends of the fresh green beans.
Mince the garlic cloves and finely chop the fresh rosemary and thyme leaves.
In a small bowl, whisk together the extra virgin olive oil, minced garlic, rosemary, thyme, sea salt, and black pepper.
Place the chicken breast, halved potatoes, and green beans onto the prepared sheet pan in a single layer.
Drizzle the herb oil mixture over the chicken and vegetables, tossing everything thoroughly to ensure an even coating.
Roast in the center of the oven for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the potatoes are fork-tender.
Remove from the oven and drizzle the fresh lemon juice over the entire pan to brighten the flavors before serving.