Preheat your oven to 400°F (200°C). This high heat ensures the potatoes get crispy and the chicken cooks through evenly.
Wash and dice your medium potatoes into bite-sized pieces, roughly 1-inch cubes. This size allows them to cook perfectly alongside the chicken without becoming mushy.
In a large bowl, combine 4 tablespoons of olive oil, 4 cloves of minced garlic, 2 teaspoons dried thyme, 2 teaspoons dried rosemary, 1 teaspoon salt, and ½ teaspoon black pepper. Stir well to create a fragrant herb mixture.
Add the diced potatoes and 4 boneless, skinless chicken breasts to the bowl. Toss everything together until the chicken and potatoes are evenly coated with the herb and oil mixture.
Spread the potatoes evenly in a single layer in your baking dish. Nestle the chicken breasts among the potatoes, making sure they’re spaced out for even cooking.
Place the baking dish in the preheated oven and bake for 35-40 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and the potatoes are tender and golden brown.
Remove from the oven and sprinkle 1 tablespoon of fresh chopped parsley over the top. This adds a fresh burst of color and flavor. Serve hot and enjoy!