Heat olive oil in a large pot over medium heat and sauté diced onion, carrots, and celery until softened.
Stir in minced garlic, dried thyme, and dried rosemary, cooking for one minute until fragrant.
Pour in the chicken broth and bring the mixture to a gentle simmer.
Add the diced chicken breast to the pot and cook for approximately 5 minutes.
In a separate small bowl, whisk together the whole wheat flour, baking powder, sea salt, and black pepper.
Gently fold the Greek yogurt into the flour mixture until a soft, slightly sticky dough forms.
Drop small spoonfuls of the dough into the simmering broth, ensuring they are spaced apart.
Cover the pot with a tight-fitting lid and steam for 10 minutes until the dumplings are fluffy and cooked through.
Garnish the dish with fresh chopped parsley and serve warm.