The food processor and pressure cooker make this chicken pot pie a snap to prepare and bake. The filling is made with chicken breasts, but part or all chicken thighs may be used as well. Use a good quality chicken stock, preferably low-sodium or unsalted. The easy pastry takes no time to prepare with a food processor and then rolled out and chilled until the filling is finished. The filling and pastry may be prepared a day in advance.