Preheat your oven to 400°F (200°C).
Dice the chicken breast into bite-sized pieces and season with sea salt, black pepper, and dried thyme.
Heat a small skillet over medium heat and sauté the diced onions, carrots, and minced garlic until the vegetables begin to soften.
Add the seasoned chicken to the skillet and cook for 4-5 minutes until the exterior is lightly browned.
In a small bowl, whisk the arrowroot starch into the cold chicken broth until no lumps remain.
Pour the broth mixture and the frozen peas into the skillet, stirring constantly until the liquid thickens into a velvety gravy.
Transfer the chicken and vegetable mixture into a small individual-sized oven-safe baking dish.
In a separate bowl, combine the whole wheat flour, ghee, and water, mixing until a soft dough forms.
Roll the dough out thinly on a floured surface and place it over the top of the baking dish, pressing the edges to seal.
Bake for 15-18 minutes until the crust is golden-brown and the filling is bubbling.