I buy frozen chicken wings from Tesco and my boys love them. I used to give them unfrozen but they would bring up pieces of bone some hours later, but when they have them frozen this doesn't happen. They also have Millie's Wolfheart but don't eat much as they prefer the frozen chicken. I now give them three wings or pieces a day. They let me know when they want their chicken.
In the morning I give them a wing after I have finished my breakfast, and if I am slow Timmy puts his head on my knee and cries. Once I have finished they create and run to the freezer for their chicken. They have another after lunch and another at dinner time in the evening. They would eat frozen chicken all day if I let them.