Step #1 Combine the first 3 ingredients, & set aside.
Step #2 Combine water & margarine in a medium saucepan, & bring to a boil.
Step #3 Reduce heat to low; add the flour mixture, stirring well until mixture is smooth & pulls away from sides of pan.
Step #4 Remove from heat, & let cool 5 mins.
Step #5 Add egg whites & egg, 1 at a time, beating vigorously with a wooden spoon until smooth.
Step #6 Spoon mixture into a pastry bag fitted with a 1/2-inch round tip, & pipe 30 (1 1/2-inch-round) mounds onto a baking sheet coated with cooking spray.
Step #7 Bake at 425° for 10 mins.
Step #8 Reduce oven temperature to 350°, & bake an extra 10 mins; let cool completely on a wire rack.
Step #9 Cut tops off cream puffs; fill each cream puff with 1 tbsp Chicken Salad.