Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Wash and dice the Yukon Gold potatoes into half-inch cubes to ensure they cook evenly and get crispy.
In a bowl, toss the potato cubes with half of the olive oil, dried rosemary, dried thyme, and a pinch of salt and pepper.
Spread the potatoes onto the baking sheet and roast for 10 minutes.
While potatoes roast, season the chicken breast with garlic powder, the remaining olive oil, and the rest of the salt and pepper.
Remove the pan from the oven, move the potatoes to one side, and place the chicken breast on the other side.
Return the pan to the oven and roast for another 18 to 20 minutes until the chicken reaches an internal temperature of 165°F.
While the chicken and potatoes finish, steam the broccoli florets in a steamer basket over boiling water for 5 minutes until tender-crisp.
Plate the chicken and potatoes next to the broccoli, then finish the dish by drizzling fresh lemon juice over the chicken and vegetables.