I found a diet plan in Cosmo, and it involves eating a 100g portion of white meat 5 times throughout the day?

There are many who say, and probably rightly, that you'll get less hungry and keep your blood chemistry more even if you eat 5 or 6 SMALL meals throughout the day instead of 3 larger ones. As long as you get the nutrients that you need and an appropriate amount of calories over all, then it should be fine.