Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Dice the Yukon Gold potatoes into 1/2-inch cubes and trim the ends of the green beans.
Cut the chicken breast into 1-inch bite-sized pieces to ensure even cooking.
In a large mixing bowl, whisk together the extra virgin olive oil, rosemary, thyme, garlic powder, onion powder, sea salt, and black pepper.
Add the chicken, potatoes, and green beans to the bowl and toss until every piece is thoroughly coated in the herb oil.
Spread the mixture in a single, even layer on the prepared baking sheet, ensuring the pieces aren't too crowded.
Roast for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F and the potatoes are fork-tender and slightly crisp.
Remove from the oven and garnish with freshly chopped parsley before serving.