The reason you now have the cage-mounted feeder is because you guys would knock over your ceramic dishes when they were filled with food and then trample all over it, making your cage dirty about twice as fast as usual.
But please, please, stop eating your new feeder. You have about a dozen chew toys already, you don't need to eat the feeder as well. Not only will it not be able to hold as much real food if you keep eating it, but it's probably bad for you too. That's why I have to take it out after mealtimes now.