Preheat your oven to 425°F (220°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Wash the yellow potato and cut it into 1-inch cubes, then dice the chicken breast into similar bite-sized pieces.
Mince the garlic cloves and finely chop the fresh rosemary and thyme leaves.
In a large mixing bowl, combine the chicken, potatoes, garlic, rosemary, thyme, sea salt, and black pepper.
Drizzle the extra virgin olive oil over the mixture and toss thoroughly until every piece is evenly coated in oil and herbs.
Spread the ingredients in a single layer on the prepared baking sheet, ensuring they aren't crowded so they can crisp properly.
Roast for 25 to 30 minutes, tossing halfway through the cooking time, until the potatoes are golden-brown and the chicken is fully cooked through.
Remove from the oven and serve immediately while the potatoes are at their peak crispiness.