Preheat An Oven To 350 Degrees F (175 Degrees C). Beat Eggs In A Bowl; Season With Salt And Pepper. Spread The French Fried Onions On A Plate. Dip Each Chicken Breast Into The Egg, Then Coat One Side Of The Chicken Breast With The Fried Onion. Place Chicken With Onions On Top On A 9X13 Inch Baking Pan. Bake The Chicken Breasts In The Preheated Oven Until No Longer Pink In The Center And The Juices Run Clear, About 25 Minutes. An Instant-Read Thermometer Inserted Into The Center Should Read At Least 165 Degrees F (74 Degrees C). Place One Slice Of Provolone Cheese On Top Of Each Chicken Breast And Return The Pan To The Oven, Baking Until The Cheese Is Melted, 3 To 5 Minutes.