Seems like World Quest Tracker addon just didn't update, still have it available on 1 toon.
Tried your tactic and it works great, awesome that it works with lvl 1 pets.
Fight takes 43 seconds.
XP on lvl 1:
No other buffs: 4350 XP
With hat and both treats: 5583 XP
Way better than wild battles,
still inferior to Squirt unfortunately (even with the Bonus Event active it yields less XP, requires Bandages (no issue for me) and doesn't give character XP as you need to be 110 to access). Still a great way to level pets though, so thanks a lot for sharing!