(Yes you could use an egg instead of an egg replacer. The recipe should still work the same. But consider getting a small bag of egg replacer sometime! It's a dry powder you mix with water when you want "an egg" for baking recipes. It lasts forever, doesn't contribute to animal cruelty, and does the same job a bird egg would do.)
: D
(Also... no, the cookies don't taste like chick peas... they actually taste like any other homemade cookie. Can't tell that there's no wheat. That's a huge plus for people who avoid gluten, like myself. Being able to eat cookies again is awesome!)