There could be a few reasons why your crepes turned out crispy. First and foremost, you might have cooked them too long. Secondly, your pan might have been too hot, causing the batter to become hard and crispy.  I’ve always used this tip by Nigella to determine whether or not my pan is too hot. If your batter becomes hard and sticks to the pan as soon as you pour it in, then your pan is too hot.  If you’re able to form an even thin layer when you tilt the pan, then your pan is the perfect heat.