Dice the chicken breast into bite-sized pieces and season with half of the sea salt and black pepper.
Heat olive oil in a pot over medium heat and sauté the diced onion, carrots, and celery until the onions are translucent and fragrant.
Add the chicken to the pot and cook for 3-4 minutes until lightly browned on all sides.
Pour in the chicken bone broth and dried thyme, then bring the mixture to a gentle simmer.
In a small bowl, whisk together the whole wheat flour, baking powder, remaining salt, pepper, and chopped fresh parsley.
Stir the water into the flour mixture until a thick dough forms; drop small spoonfuls of the dough directly onto the simmering broth.
Cover the pot tightly with a lid and steam for 10-12 minutes until the dumplings are puffed and cooked through.
Serve the stew hot in a bowl, ensuring a balanced portion of chicken, vegetables, and herb dumplings.