Preheat your oven to 400°F (200°C) and lightly spray a large baking dish with nonstick cooking spray.

In a bowl, whisk together minced garlic, lemon juice, olive oil, salt, and pepper. Add chicken breasts to the marinade; let them soak while preparing the potatoes.

Toss halved baby potatoes in olive oil, salt, pepper, and herbs until evenly coated.

Arrange marinated chicken in the baking dish with the seasoned potatoes, ensuring they are spaced out for even cooking.

Roast in the preheated oven for 35-40 minutes until the chicken reaches an internal temperature of 165°F (75°C) and the potatoes are golden brown.

Let rest before serving; drizzle with pan juices for extra flavor.