What will happen if i keep eating like this?

everyday i go to bed around 12-1am, then i wake up at 8 for school, dont eat breakfast or lunch, on the odd occasion i will have half a sandwich. then at last recess around 230 i have a cookie. then when i get home i have dinner around 5 or 6. sometimes i nibble after that but usually not. i play alot of sports so i usually work off all the calories i eat in a day. what will happen if i keep eating like this? i'm really just not hungry anymore..