Preheat oven to 400°
In a shallow bowl, combine the cornflake crumbs, Italian seasoning and garlic powder.
In another shallow bowl, combine dressing and water. (Here is the link to my homemade ranch dressing: https://joanspointedplate.com/ranch-dressing-and-dip-mix/ Dip chicken into dressing mixture, then coat with crumb mixture.
Arrange chicken on a baking sheet coated with non stick spray.
Lightly spray top of chicken with nonstick cooking spray. Bake, uncovered at 400° for 12-15 minutes or until juices run clear.