Is it bad to eat every other day?

Just wondering. I'm not trying to lose weight or anything. But some days i just don't feel like eating. Like the day before yesterday i ate like 6 slices of pizza thats all i ate all day. Then yesterday i just had a cup of cashews and water. And i don't really feel like eating today either. Its weird but some days i don't feel like eating. And some days i feel like eating half a pizza. So is that okay?