Hi Tony!
Hm, in regards to the cooking steps there are only a few things that I can think of that my impact that... if you drain and pat dry, skip the second step or after draining, cover them while they cool to retain the extra moisture.
As long as you are rehydrating the chickpeas fully you shouldn't have an issue, but if you've tried making the snack using canned beans and noticed a difference then perhaps the beans do need a little extra time. It still boggles me how I struggle to rehydrate beans at home but saw it so effortlessly done in the industry.
Also, have you tried using tahini in place of the sesame oil and the sesame seeds?