Are you going to be running on the track team? If so, you will get hungrier soon enough! If you aren't hungry at lunch, perhaps you need less breakfast. A lot of teenagers don't like breakfast. Otherwise, that's really not a huge amount of food. The thing about this food is that it works differently inside your body so it won't stimulate as much irrational hunger and it won't trigger binging and it won't pack on the pounds like pastries and junk food.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Current squat: 170 x 3. Current Deadlift: 220 x 3