Yes, very!  Pork rinds are a zero-carb food.  That's right, 0 net carbs.  The big 0.  So they make a great low-carb snack when you are on a Keto diet.  They will not cause any blood sugar spikes, so you will stay in the state of Ketosis.  It's a way to counteract your cravings for crispy high-carb high-fat fried foods.