I have eaten farmed bullfrog a bunch of times and it's definitely like chicken in a good way. The bones are thin, and there's not much meat, but 10 of them will fill you up.
I hope you ate only frog's legs? Eating a whole frog is probably not a nice experience :), but legs are IMHO quite tasty and indeed have a texture similar to the chicken breasts...
They don't taste like chicken.