How to Make It
Heat oven to 400° F. In a large bowl, combine the chicken, corn chowder, peas, corn, thyme, and ¼ teaspoon each salt and pepper.
Transfer the mixture to a shallow 2-quart (or 8-inch square) baking dish.
Lay the pastry on top of the dish, trim to fit, and cut vents in the top.
Bake until the chicken mixture is bubbling and the pastry is golden brown, 25 to 30 minutes.