Preheat your oven to 400°F (200°C).
In a mixing bowl, combine the olive oil, lemon juice, minced garlic, oregano, thyme, salt, and black pepper. Whisk until well blended.
Place the chicken breasts in the marinade and let them soak for at least 15 minutes (while you prepare the potatoes).
Wash and cut the baby potatoes in half, then place them on a baking sheet. Drizzle with 1 tablespoon of olive oil and season with salt and pepper. Toss to coat evenly.
After the chicken has marinated, add the marinated chicken breasts to the baking sheet with the potatoes.
Roast in the preheated oven for about 30-35 minutes, or until the chicken reaches an internal temperature of 165°F (75°C) and the potatoes are golden and crispy.
Remove from the oven and let the dish rest for about 5 minutes before serving.
Garnish with fresh parsley if desired and serve hot.