Ummmm.... How much do you weigh? Do you actually need to lose weight? The diet you described above is about what an anorexic would eat. Just wait till some of our resident mother hens catch you.
If you eat too few calories, for those of you who doubt it, yes, your body will slow down your metabolism and make it more difficult for you to lose weight than if you were exercising and eating a healthy diet.
If you want to lose weight (and if you REALLY need it):
Eat a healthy bfast, say oatmeal cooked with soymilk for protein, with some ground flax seed mixed in for omega 3s.
For lunch, eat some grilled tempeh wrapped in lettuce instead of sandwich bread, and some carrots and broccoli with hummus.
For dinner, make a vegetable stir fry with seitan, season with soy sauce, garlic, ginger, etc.
And exercise 30 minutes a day. And then you will lose weight in a healthy way, and it will stay off. My husband has been eating like this and has lost 30 lbs and looks awesome.