Endy, I tried that with chili pepper, granulated garlic, salt, pepper, and olive oil (great minds, eh?) but that was before I knew about roasting them low (175 US ovens) for twenty minutes. The spiciness was good but I roasted that batch too hot and long. So, the next time I repeated it at the lower temp, etc. and they came out great.
The thing about it, doing your own spicey nuts is much less expensive, assuming you have an oven and spices in the cupboard, than buying packaged nut snacks, which involve assaulting your bank account. Or so it seems around here. Plus you can fool around with the type of spice and amount of salt, if any.