Dice the chicken breast into bite-sized pieces and season with a portion of the sea salt and black pepper.
Melt the ghee in a medium pot over medium heat, then sauté the diced onion, carrots, and celery until the onion is translucent.
Stir in the minced garlic and dried thyme, cooking for one minute until the aromatics are fragrant.
Add the chicken pieces to the pot and brown slightly on all sides for about 3 minutes.
Pour in the chicken bone broth and bring the mixture to a gentle simmer over medium-low heat.
In a small bowl, whisk the cassava flour, whisked egg, and chopped fresh parsley together to form a thick, sticky dumpling dough.
Drop small spoonfuls of the dough into the simmering broth, then immediately cover the pot with a tight-fitting lid.
Steam the dumplings for 8 to 10 minutes without lifting the lid, until they are firm and the chicken is fully cooked.
Ladle the chicken, vegetables, and dumplings into a shallow bowl and serve immediately.