Is it really glitch or just weird to have lvl 7 Noctowl and Lvl 8 Pigetteo (I caught them in Viridian Forest) *usually they was supposed to evolve at 16-18 lvl right?* Honestly, I believe it's not glitch but just weird low lvl early evolved pokemon right?
Not really a glitch. It did happen in the original Gold and Silver as well.