Heat the ghee in a large stockpot or Dutch oven over medium heat. Once hot, add the cubed chicken and cook until browned, about 7 minutes. Remove the chicken from the pan and set aside.
To the pan, add the potatoes, onion, carrots and celery. Sauté for 8-10 minutes until the vegetables start to soften.
Add the chicken back to the pot along with the tapioca starch, salt, pepper, paprika and thyme and cook for 2 additional minutes before adding the chicken stock.
Bring the mixture to a boil, reduce the heat to a simmer and cook for 20-30 minutes. The liquid should reduce a bit and the mixture should look thicker.
Add a splash of cream or coconut milk for richness if desired. Serve!