Place the chicken in the Dutch oven. Add the chicken stock to the Dutch oven.
Cover the dutch oven with a lid and bake it in the preheated oven for about 45 minutes, or until the internal temperature of the chicken reads 165 degrees.
Remove the chicken from the oven. Shred the chicken, and then stir it with the remaining stock.
Allow the chicken to cool, and then store it if you're not using it right away.
Notes
Try not to overcrowd your chicken - If you want to do a larger batch of shredded chicken and layering your chicken is a must, it's fine. Just note that the cooking time will be a bit longer before the chicken is shreddable.Don't open the Dutch oven while the chicken is cooking - Keeping the Dutch oven closed while the chicken cooks keeps the heat and moisture locked in.Shred the chicken while it is still warm - Chicken shreds easier when it is warm. Once it gets cold it is a little harder. If you wait till it's cold, you'll likely end up having to dice it with a knife instead of shredding it.