I cant gain weight help?

i eat alot but alot of healthy stuff not because im afraid to eat fatty foods because i find healthy foods tasty. i love eating rice and beans, some chicken ,spinach,okra ,salad with dressings etc and im crazy for pasta. but i just dont like the taste of fast foods, i dont like mcdonalds, i dont like oily foods i dont like heavy pasturized foods because they give me upset stomach and they make me break out terribly. i have a fast metabolism so all the foods i usualy eat wont help. how can i gain weight without eating fast foods