Does anyone ever have times where they only eat 2 or 3 foods?

There's some times where for weeks on end I only want to eat 2 or 3 foods- Last month I had a phase where I ate only tuna, acai pulp, and pineapple. This month I only want to eat blue berries, spinach, and pineapple... I am a recovered anorexic. I try to eat healthy, but these foods are literally the only ones that I want. Is there something wrong?