Healthy eating!?

I really would like to start eating healthy!! I have bad acne and am not as thin as I would like to be. Eating clean will also just help me start a healthier lifestyle but I have a couple problems.. I'm a really picky eater and allergic to most fruit. I can't eat apples, bananas, pineapple, peach, watermelon, etc. I also don't like onions and peppers. do you have any ideas of things I can eat??