Sorry, but i'm afraidn your diet is not good. You're supposed to eat around 2,000 a day if you're not active and you could add another 300-500 on top for exercise.
If this contineus you could devlop deficiencies and could also cause yourself thin Bones, with an increased risk of fractures from doing any exercise, if you do anything that exceeds the tolerance of a bone or bones.
Overall health is more impotrant than just a 6-pac

.