While it may seem convenient to boil vegetables in the same pot with chicken leftovers to save time, it is not recommended. Vegetables and chicken have different cooking times and temperatures, and boiling them together can result in overcooked or undercooked vegetables, or potentially unsafe chicken.
Chicken leftovers should be reheated to an internal temperature of 165°F to ensure that any harmful bacteria is killed. Vegetables typically require less time and heat to cook properly.
To save time, you can consider cooking vegetables separately in the microwave, steaming them, or roasting them in the oven while reheating the chicken leftovers. This will help ensure that both the chicken and vegetables are cooked properly and safely, while also saving time.