Peel and roughly chop potatoes and carrot, thinly slice leek and celery, and dice onion and garlic.
Add all veggies to the slow cooker. Place chicken on top and add 1.5 Ltrs of water or enough to cover at least an inch above veggies (chicken will not be covered by water). Mix 1/4 cup of bone broth powder or a stock cube in 1 cup of water and add to slow cooker.
Cover with lid and cook for 6-8 hours on low or 4hrs on high. Serve with parsley sprinkled on top