The softness of chicken roll skin is related to the process of making it, here are some do's and don'ts:

Choose the right crust: choosing a soft crust makes it easier to make soft chicken roll skin.

Knead sufficiently: the crust should be kneaded enough to make it elastic, then the roll skin will be softer.

Sufficient Raking: Raking means letting the dough rest for some time so that the dough becomes softer and easier to roll the skin.

Small amount of filling: Use a small amount of filling so that the rolls don't get tough and stay soft.

Light Handling: Handle the rolls lightly to avoid hardening the dough.