Dice the chicken breast into bite-sized pieces and season with a pinch of sea salt and black pepper.
Heat the olive oil in a large pot over medium heat and sear the chicken until golden brown on all sides, then remove and set aside.
In the same pot, add the diced onion, carrots, and celery, sautéing for 5-7 minutes until the vegetables are softened and fragrant.
Pour in the chicken bone broth and add the dried thyme, bringing the mixture to a gentle simmer over medium-low heat.
In a small mixing bowl, whisk together the whole wheat flour, baking powder, chopped fresh parsley, and water until a soft, slightly sticky dough forms.
Stir the cooked chicken, frozen peas, and heavy cream back into the pot, adjusting the heat to maintain a very low simmer.
Drop small spoonfuls of the dumpling dough directly onto the surface of the simmering liquid, then cover the pot with a tight-fitting lid.
Steam the dumplings for 10-12 minutes without lifting the lid, until they are puffed and cooked through, then serve immediately.