It won't have the effect of "fattening" like those fried foods, but chestnut contains high starch and astringent intestines, unlike sweet potatoes. Although it is also rich in starch, it is rich in fiber, which helps the digestion and laxation of the stomach. Eating some properly will help you lose weight, make you feel full, and indirectly reduce your appetite for other foods.
Therefore, chestnut should be eaten less, and more fruits and vegetables should be eaten on the day of eating to avoid getting fat. Instead of eating chestnut with some high-calorie or fried things, there is a chemical reaction and fat is more likely to accumulate.