Steps
1. Preheat your oven to 400°F (200°C).
2. In a small bowl, mix together the ketchup, soy sauce, garlic powder, onion powder, salt, and pepper.
3. Rub the olive oil over the chicken thigh, then coat it with the ketchup mixture.
4. Place the chicken thigh in a baking dish and bake for 25-30 minutes, or until fully cooked and juices run clear.
5. Garnish with fresh parsley before serving.