Chicken or steak ? which meat is the most healthy for acne

Forgive my frankness: Acne is a chronic disease that's affected very little by diet. I see that you've already taken the best step you can possibly take and started on isotretinoin. This isn't for the faint-hearted but it should control you for several months to several years and by then you may self-cure. You've invested a lot in your self-care. Eat whichever you feel like -- you deserve it.