So I just had a very weird and unfortunate bug in my most recent Hearthstone Battleground. I have the Snicker Snack quest and I had 2 of the Picky Eater minions and 1 Faceless Disciple. At the end of my turn the one of the Picky Eater’s consumed a minion, the other Picky Eater turned into a 2/2 Kaboom Bot. There wasn’t even a Kaboom Bot on the frozen board. It was just a Voidlord and an Iron Sensei. It completely ruined my game as I went from having a pair of 14/14s to no pairs and a 2/2.
Your Snicker Snack triggered on the Faceless Disciple turning a Picky Eater (1 cost) into a Kaboom Bot (2 cost).
No bug here.
Looks like you missed the answer as you were typing it! 
Faceless is the answer