...he keeps them caged to make them fat... they are looking pretty rough and when we put them in the barn they were pretty wobbly...
That kind gets fat anyway, even if they are not kept in a cage.
As several people already said, they are Cornish Cross meat birds.
I hope you intend to butcher them for meat, sometime within the next month or so, because that is probably the kindest thing you can do for them.
They are bred to have big appetites, eat a lot, and grow quickly. If you do not butcher them, they will start dying of heart failure before they even finish growing up. The only effective way to keep them "healthy" for a longer life is to drastically limit their feed. This stunts their growth enough that they can stay alive and function-- but they are not happy if you do that, because they constantly think they are starving.
If you want chickens for meat, they are a very good kind of chicken.
But if you want hens to lay eggs, any other chicken breed would be a better choice.