Heat the olive oil in a medium pot over medium heat.
Add the diced carrots, celery, and yellow onion, sautéing for 5 minutes until the vegetables begin to soften.
Stir in the cubed chicken breast, sea salt, black pepper, dried thyme, and dried rosemary, cooking for 2 minutes to sear the meat.
Pour in the chicken broth and bring the mixture to a gentle simmer.
While the broth simmers, whisk together the cassava flour, baking powder, and Greek yogurt in a small bowl to form a thick, tacky dough.
Using a small spoon, drop marble-sized portions of the dough directly into the simmering broth.
Cover the pot with a tight-fitting lid and simmer for 10 minutes without lifting the lid to ensure the dumplings steam properly.
Remove the lid and gently stir in the coconut milk to create a creamy consistency before serving warm.