My little female Bagon evolved into a Shelgon a little while ago, but now she doesn’t seem as playful as she was as a Bagon. Is this normal for a Shelgon?

Actually, yes, anonymous. While a shelgon has limbs and is generally more active than other pupal pokémon (metapod, pupitar, and so on), it’s still a pupal-stage pokémon. As such, yours and all other shelgon like her are actually conserving energy for their next evolution—while, perhaps, focusing completely on imagining their first moment of flight.

That having been said, I wouldn’t worry about her sudden change in mood, anonymous, and certainly don’t be alarmed if she seems less energetic and less hungry than usual. Simply support her as much as you can, take her to the pokémon center for regular check-ups, and give her what she needs when she needs it, and she’ll be able to evolve and … well, perhaps not be quite as playful as she had been, but at least she’ll be as energetic.

Best of luck, anonymous, and congratulations on your recent evolution!