Chestnuts are a nut by nature but not by nutrition. The chestnut's high starch content rivals that of the potato. It's low in fat and a good source of vitamin C and iron. A 100-g serving has 201 kcals, 45 g carbs, 1 g fat, 3 g protein, 47% of vit C, and 12% iron. For comparison, 100-g of baked potato contains 21 g carbs.
The potatoes reminded me of the greasy potato sticks my sister loved as a kid. Do cold, thin-cut, oily fries taste good? Crusty, thick-cut, seasoned steak fries with a ramekin of ketchup sound better to me!