Should I skip dinner?

Hi I am a 13 year old boy and I am proud that I have lost 85 lbs. For breakfast every single morning I have a GIGANTIC bowl of cornflakes with cut up strawberries and one cut up banana with blueberries with skim milk. Feeling guilty because I eat such huge thong of corn flakes Wichita doubles my calories/ sugar/ carbs I skipped lunch. And right after breakfast I walked an hour and an half long! I skipped lunch and went to the gym with my dad Nd burned 116 calories doing bike and I don't know how mNy doing ten minutes on tred mil. I'm STARVING right now my stomach is so empty because I think I burned off a lot of calories. I felt like I ate over a thousand calories for reakfast. I might just have some fruit for dinner but I want to have boneless chicken boiled and make it into a chicken salad.... Should I skip dinner?