If you do, get it without the fake butter. That stuff is all polyunsaturated fatty acids and is terrible for you. Consider sneaking in some real butter and putting that on. Don’t go bonkers with the popcorn, but Prof. Benjamin Bikman eats keto, has popcorn with his kids, and says it doesn’t seem to affect him too badly. I hope this is true, because I do miss my popcorn (probably shouldn’t eat the entire bowl by myself, though?)
I make Fathead pizza for the family once a week, or once every other week, and will have 2-3 slices. If there are any left over (usually the case), I will have a slice or two the next day for lunch. There’s some carbohydrate in the cheese and the almond flour, but the rest is protein and fat, so I don’t worry about it too much.