MIX batter ingredients in a pre-sprayed 9 1/2-inch deep dish pie plate. Combine all topping ingredients EXCEPT mozzarella cheese and roma tomato in a mixing bowl.
TOP dough with chicken mixture, gently pushing topping into batter with the back of a spoon. Evenly distribute tomato slices and sprinkle with shredded cheese.
BAKE by placing in a COLD oven; set temperature to 350°F. Bake for 30 minutes or until done.
Recipe Note: If desired, batter may be mixed in a separate bowl. Proceed as directed above.