Dice the carrots, celery, and onion. Set aside.
Place the chicken in the bottom of the slow cooker.
Add the carrots, celery, onion, and optional peas on top of the chicken.
Pour in the chicken broth and cream of chicken soup.
Add the thyme, garlic powder, salt, and pepper. Stir gently to combine.
Cover the slow cooker and cook on low for 6-8 hours or high for 3-4 hours, until the chicken is tender and easily shreds with a fork.
Once the chicken is cooked, use two forks to shred it directly in the slow cooker. Stir to distribute the meat evenly.
Open the can of biscuit dough and cut each biscuit into 4 pieces. Lightly dust the pieces with flour to prevent sticking.
Place the biscuit pieces on top of the stew in a single layer. Press them down gently so they’re partially submerged in the broth.
Cover the slow cooker and cook on high for 1-2 hours, until the dumplings are cooked through and fluffy.
Spoon the chicken and dumplings into bowls and enjoy!