Not OP but one thing you can do is boil or lightly-pan-fry (don't use any spices, or at least check that they're dog-safe, _do not_ use garlic) chicken thigh or chicken breast, cut it into small cubes and freeze it in sandwhich bags.

Dogs love it because it's just little meat cubes. Thaw it before you give them.

You can do the same thing with hotdogs.