Preheat oven to 400-degrees F. Coat a baking sheet with nonstick spray and set aside. Place egg whites in a bowl and beat until frothy. Place cereal and coconut in a resealable plastic bag; season with salt and pepper and crush well. Dredge chicken strips in egg white and place a couple at a time into the bag to coat with coconut mixture. Transfer to baking sheet. Bake for 6 to 7 minutes per side, until chicken is cooked through.