The moisture percent for deep fried potato pellets chips coated with different concentration of whey protein ranged from 1.05 to 1.93%. The control treatment have the lowest moisture content (1.05 %) which have the highest fat content (39.49%) , while the highest moisture content ( 1.93 % ) for treatment that contain 7% whey protein have low fat content 24.15 % . and these results might be due to the increase in water-holding capacity and consequently due to prevent of moisture replacement by oil, and this is agreed with Holownia et al. (2000) who reported that using many edible coating films were reduced fat absorption and improved moisture retention in starchy products and poultry products.