Preheat the oven to 325°F
Place the BBQ chicken in a baking dish
Add a small amount of water, broth, or extra BBQ sauce
Cover the dish tightly with foil
Heat for 15 to 25 minutes, until warmed through
Check that the internal temperature reaches 165°F
Let it rest for a few minutes before serving
Reheat in the microwave in short intervals if needed
Use a skillet over low heat for smaller pieces
Avoid overheating to keep the chicken moist