Place chicken soup ingredients in the crockpot (no precooking on the stove!) 2. Set the cooker on low for 4-6 hours or high for 2 hours (*crockpot times may vary). 3. During the last 30 minutes of cooking, add peas and corn. 4. Just before serving, remove the chicken thighs, shred them, and add back to the pot. Serve warm.