Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
In a small mixing bowl, whisk together the olive oil, minced garlic, rosemary, thyme, sea salt, and black pepper.
Slice the fingerling potatoes in half lengthwise and slice the carrots into half-inch rounds.
Place the chicken breast, halved potatoes, carrots, and broccoli florets onto the prepared baking sheet.
Drizzle the garlic-herb oil mixture over everything and toss the vegetables thoroughly to ensure they are well-coated.
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 let the chicken rest for 5 minutes before slicing to keep it juicy.
Garnish with freshly chopped parsley and serve immediately.