For me, it would be a tough choice between Sriracha and Chicken & Waffles, but I have to go with the latter because of its creativity. If you want my million-dollar opinion, I personally think they should take the Doritos Collision approach and put both flavors in every bag roughly 50/50. After all, what's fried chicken without a little hot sauce?
Have no idea what the brand is so I am purely going from what they say.
Personally, I don't think chicken and waffles is possible to pull off. I'd imagine it'd just taste like a really sweet chip, which has a very small hint of chicken.
The cheesy garlic bread would taste good if they can do it right. I think it is easy enough to pull off, but it isn't what I'm looking for in a chip.
The Sriracha is probably a very dumbed down version of what it should be. I don't think they'd be able to capture the flavour that should be in that chip.
So, cheesy garlic bread it is. However, I haven't tasted any of these before.