Preheat the oven to 425°F (220°C). Line the sheet pan with parchment paper or lightly grease it with cooking spray for easier cleanup.
In a mixing bowl, combine the olive oil, garlic powder, onion powder, thyme, paprika, salt, and pepper. Mix well to create the seasoning blend.
Add the chicken thighs to the bowl and coat them evenly with the seasoning mixture. Set aside for a few minutes to marinate.
In the same bowl, add the halved baby potatoes and toss them with any remaining seasoning.
Arrange the seasoned chicken thighs on one side of the prepared sheet pan. Place the seasoned potatoes on the other side, ensuring they are evenly spread out.
Bake in the preheated oven for about 40-45 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and the potatoes are golden brown and tender.
Once done, remove the sheet pan from the oven and let it rest for a few minutes. Garnish with fresh parsley if desired.
Serve hot and enjoy your delicious sheet pan chicken and potatoes!