Hello my friend!
what a pleasure to see you again in my post, well I understand that you think it's a waste to throw away the Apple peel but I use it to make tea, so most of the time it's not wasted.
And as for the structure of the dessert, that is given not only by the gelatin but by using the electric mixer until the mixture is frothy.
And I really don't know if you can use chia seeds, it would be good to investigate.
Greetings!
And thank you for visiting me. ☺️