Boon Plate Stays Food Goes All Over

I was determined to get Saya to eat some sweet watermelon today. So I dished up some pears, watermelon, avocado and cheese on her Boon plate. I thought she would pick up a piece and start eating it. Nope, not the case. The food when flying on the floor but the plate stayed in place. I'll have to try again during her next feeding.