Could be puberty?
Nib went through an insane phase when he started dropping his sac, but with regular handling, he got over it. Granted he's a crestie, so the dynamic is a little different, but hopefully Pable's just feeling hormonal and territorial and its just a phase. Try taking him out to feed him, so he associates you with something positive. Mine love to lick the juice off watermelon rind as a treat. Maybe something like that or organic mango?
Help! Crested Geckos! 0.1.Leachie, 2.1.1 Gargs, 1.0 Chahoua, 2.1. Blue Tongue Skinks, 1.1. White Lined Geckos, 1.3. African Fat Tails, 2.2.0 Tokay Geckos, 1.0. Giant Day Gecko, 2 tarantulas