Foods that give you item after eating works fine unless in slot 1

When you eat the soup can, it gives you the next one in line from 8 down to 1 serving left.. Everything works fine with it, the food being eaten is fine, then it gives you the next item from the procedure.. 

The problem with it, is if you have the soup can in the first slot (bottom left), slot 0? when you eat it then, it eats the food, gives you the item, then removes the item..