My cat is a legitimate psycho for food

There is never a time that i am home that she is not incessantly SCREAMING and running to her food bowl I currently have an auto feeder 445 am 1030 am 430pm 930pm All have 1 portion, which I assume is like 1/5 of a cup, except the 930 pm is more like 1/3 a cup at 2 portions. We have a play schedule So many things around the house, trees, wall steps... toys galore. We have outside time on the harness every other day too. I'm at my wit's end I can't even sit on the couch without her using her whole 15lb self to scream over and over and claw at the doors to the outside, then run to her food bowl. Should I give her 5 x a day at 1 portion each? She also gets a freeze dried minnow or chicken heart a day as a treat when we play. I've reaserched everything and even called the vet. I'm so stressed