Place the boneless, skinless chicken in the crockpot.
Pour in the chicken broth and cream of chicken soup. Stir to combine.
Add the chopped carrots, celery, diced onion, salt, black pepper, garlic powder, and dried thyme. Stir again.
Cover and cook on low for 6 hours, or until the chicken is tender and easily shreds.
Remove the chicken from the crockpot and shred it with two forks. Return the shredded chicken to the crockpot and stir.
Tear the refrigerated biscuit dough into small, bite-sized pieces and drop them into the crockpot. Gently stir to prevent clumping.
Cover and cook for an additional hour on low, until the dumplings are fluffy and fully cooked.
If using frozen peas, stir them in during the last 10 minutes of cooking.
For a creamier consistency, stir in heavy cream or half-and-half before serving.
Ladle into bowls and serve warm. Enjoy!