Cook the Bacon:
In a skillet over medium heat, cook bacon until crispy. Remove and set aside.
Sauté Onion and Garlic:
Add the diced onion and minced garlic to the bacon drippings. Sauté for 3 minutes until golden and fragrant.
Layer Ingredients:
Transfer the onion-garlic mixture to the bottom of the crockpot. Add chicken breasts, diced potatoes, carrots, and celery. Pour in chicken broth and sprinkle with thyme, salt, and pepper.
Cook in Crockpot:
Low: 8–10 hours
High: 4–6 hours
Check the chicken after 6 hours. If cooked through, remove and shred.
Thicken the Soup:
Once the potatoes are tender, mash some of them with a potato masher or blend a portion of the soup for a creamier consistency.
Add Chicken:
Stir shredded chicken back into the crockpot.
Garnish and Serve:
Top with parsley, shredded cheese, or crumbled bacon. Serve warm with bread or a fresh salad.