Begin by marinating the diced chicken breasts with salt and pepper. Melt the butter in a skillet and fry the diced chicken until golden. Cook the chicken until it turns a golden brown. Leave the chicken in the skillet.
In the same skillet, sauté the chopped onions and sliced carrots. Add the minced garlic and continue sautéing over low heat.
When the vegetables are softened, add the flour and cook for 2-3 minutes over low heat.
Pour in the chicken broth and milk, stirring to cook. As the sauce thickens, add the chicken back to the skillet. Add the peas and mix.
Season with salt and pepper, then add the chopped parsley and stir. Remove the skillet from the heat.
In a separate bowl, mix the biscuit ingredients. After kneading the dough, roll it out on a floured surface.
Pour the chicken mixture into a baking dish. Place the biscuit dough on top.
Bake in a preheated oven at 180°C (350°F) until the biscuit topping is golden brown. Once the top turns golden, remove from the oven.
Serve by slicing and garnish with freshly chopped parsley.