Dice the chicken breast into bite-sized pieces and finely chop the carrots, celery, and onion.
Heat a large pot over medium heat and add the chicken, cooking until lightly browned on all sides.
Stir in the carrots, celery, and onion, sautéing for 5 minutes until the vegetables begin to soften.
Pour in the chicken broth and add the dried thyme, dried rosemary, sea salt, and black pepper.
Bring the liquid to a gentle simmer, then reduce the heat to low.
In a small mixing bowl, combine the almond flour, tapioca starch, garlic powder, and coconut milk, stirring until a thick dough forms.
Scoop small, teaspoon-sized portions of the dough and carefully drop them into the simmering broth.
Cover the pot with a tight-fitting lid and steam for 10 minutes until the dumplings are set and the chicken is tender.