Agree - cheese shouldn't be given too often, but a little bit once a week is fine I reckon. I think it's more milk that is the issue isn't it? Brazil nuts are very high in protein and something that boosts the immune system, so I have a bag of those and give half of one once a week
I eat the other half lol. I'm the food tester - just to check it's not an "off" one.
Pecan nuts are also one of the highest calorie foods there is.