Unroll one of the pie crusts. Gently press it into the bottom and up the sides of a 9-inch pie plate. Fill the bottom with pie weights. Bake for 15 minutes. Remove the pie weights.
While the bottom pie crust is baking, melt the butter over medium heat in a large frying pan. Add the flour, stir and cook for a couple of minutes until it is lightly brown in color.
Add the seasonings, poultry seasoning through black pepper. Cook for one minutes while stirring until fragrant.
Add the chicken broth and whisk while cooking for a couple of minutes until a smooth gravy is formed.
Stir in the mirepoix and chicken. Cover the pan and allow to simmer for about 5 minutes.
Remove the lid. Stir in the cream cheese and peas. Continue stirring and cooking until the cream cheese is completely melted.
Remove from heat and gently pour into the prepared pie crust. Smooth the top.
Unroll the second pie crust and place it on top of the filling. Fold the edge underneath at the edges so they are even with the pie plate edge. Crimp the edges, as pictured. Use a sharp knife to cut small slits in the top so the steam can vent as the pie bakes.
Bake the pie for 35 - 40 minutes until golden brown. Allow the pie to cool for about 10 minutes before serving.