Although you should be wary about the feeding of excessive protein (especially in older hams), something like this on occasion is fine.
Being as they're 100% chicken with no rubbish means they are safe.
I've fed treats like this before. My guys are proper little carnivores, especially my hybrid Todd, who loves anything meaty. I give him a little snip of dried chicken I get for my dogs, but only as a rare treat. It could also be beneficial for young growing hams.
EDIT: I've just looked at the analysis, and it says they are
81% protein - which is really high! Far more suited to what they are made for: obligate carnivores like cats and ferrets. This is probably because they are freeze dried.
You could probably still feed some, but literally only a weeny little piece. Maybe if you were buying them anyway (if you have a cat) just snip a tiny bit off of a piece. But I wouldn't buy a pack fo these just for hams, because they would go bad before you got to use them.
Most dried meat treats similar to this are more like 45 - 60% protein, which is not so bad.