I have been doing chaffles for some time, and now I have stabilized with one recipe:
30g of chia, 30g of milk added to the chia, 30g of a mixture of crushed walnut/hazelnut/almond, an egg (about 58g), about 25g of psyllium husk, salt, olive oil, and then, some species (I alternate among tikka masala powder, curcuma & black pepper, ginger, oregano …). I do not add cheese (only milk), so this is a chaffle-not-chaffle. I do not add any thickener, as other recipes do.
This recipe results in 2 chaffles, if I spread well the product.
For me, the critical issue is to leave the chaffle for a long time in the machine, say 25 minutes or even more. This results in a chaffle with the consistency of a cracker.
I think that when the chaffle is left less time, it is a bit tender and flexible, and this texture is not as good as bread. But instead, as a cracker, the chaffle is as good, or better, than a good quality cracker.
I eat 2 per day.