Preheat your oven to 400°F (200°C).
In a medium oven-safe skillet, heat the olive oil over medium heat.
Add the diced onion, carrots, and celery, sautéing for 5 minutes until the vegetables begin to soften.
Add the diced chicken breast to the skillet and cook for 4-5 minutes until the exterior is browned.
In a small bowl, whisk the arrowroot powder into the cold chicken bone broth until no lumps remain.
Pour the broth mixture into the skillet, stirring constantly as it simmers and thickens into a gravy.
Stir in the frozen peas, sea salt, black pepper, and dried thyme.
In a separate small bowl, mix the almond flour and melted ghee together until a crumbly dough forms.
Sprinkle the almond flour mixture evenly over the top of the chicken and vegetable filling.
Place the skillet in the oven and bake for 12-15 minutes, or until the topping is golden brown and the filling is bubbling.