That is all you eat? Not enough calories! What are your maintenance cals? You should not go more than 500 calories below your maintenance, even when cutting.
First off, you need to be getting more fat. I'd say add at least a tablespoon of olive oil or PB to your last three meals.
Where are the veggies? Veggies are your friends, they help you lose fat and get lots of vitamins and minerals that are necessary whether you cut or bulk.