HEAT oven to 425ºF.
PREPARE Dinner in large saucepan as directed on package, except do not add the Bread Crumb Topping.
MEANWHILE, heat oil in large skillet on medium-high heat. Add chicken; cook and stir 2 to 3 min. or until done.
ADD chicken, peas and tomatoes to Dinner; mix lightly. Spoon into 13x9-inch baking dish sprayed with cooking spray. Sprinkle with crumb topping.
BAKE 8 to 10 min. or until Dinner mixture is heated through and crumb topping is golden brown. Top with bacon bits.