- Preheat the oven to 400°F (200°C).
- In a large bowl, whisk together balsamic vinegar, olive oil, honey, garlic, salt, and pepper.
- Add the chicken breasts and potatoes to the bowl, tossing to coat them in the marinade.
- Spread the chicken and potatoes in a single layer on a sheet pan.
- Bake for 25-30 minutes, or until the chicken is cooked through and the potatoes are tender.
- Garnish with fresh rosemary before serving.
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