My frog is weird with dubia. When I tong feed them to him, he pretty much instantly gulps them down. But then he spits half of them out, waits with them halfway in his mouth, and gulps them down again. Maybe he's debating on eating them but then can't resist the urge?

Its pretty comical. I can't think of a time where he didn't do that. Oh, and he doesn't do it with crickets.