Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Wash the russet potato and red bell pepper, then dice them into uniform 1-inch cubes.
Mince the garlic cloves finely and set aside.
Cut the chicken breast into bite-sized pieces to ensure even cooking with the vegetables.
In a large mixing bowl, combine the chicken, potatoes, and peppers.
Drizzle with extra virgin olive oil and add the minced garlic, rosemary, thyme, sea salt, and black pepper.
Toss everything thoroughly until the ingredients are well-coated in the oil and seasonings.
Spread the mixture in a single layer on the prepared baking sheet, ensuring nothing is overcrowded.
Roast in the center of the oven for 25 to 30 minutes, tossing halfway through, until the chicken is cooked through and the potatoes are golden and tender.