If he starts to give you heck again, ask if he's read the book. Then explain to him that on Atkins you are to eat 3 cups of veggies a day and have plenty of healthy fats. Explain to him too that part of the lifestyle is avoiding nitrates, over processed foods, and eating plenty of natural protien sources along with fiber sources. If he's eating something like a rice cake ask him how his cardboard tastes and if he really thinks something totaly man made like that is anywhere near as healthy as food from plants and animals

The only problem with pork rinds is the sodium content, but as long as you drink plenty of water and don't eat a ton it should be fine. Blue cheese is ok unless it has added sugar, or if you have problems with dairy or candida. You had a perfectly fine snack, just ignore him and munch happily.