WTF DIET

My frogs are getting too big for medium dubias, and I got a whole bunch of large dubias today. I'm concerned about how big they are. They are subaadults. I just don't wanna hurt my frogs. I fed them each, a large prekilled roach they both ate one and didn't seem to have a problem swallowing. Is this safe or should I worry about impaction or some other problem, i'm not aware of. Here's some pictures of the cuties.