Villain 30/6 over like 35 hands

Button ($21.48)
SB ($11.07)
BB ($21.28)
UTG ($10.21)
UTG+1 ($22.92)
Hero (MP1) ($10)
MP2 ($10.40)
MP3 ($10)
CO ($10.87)

Preflop: Hero is MP1 with K, K
1 fold, UTG+1 bets $0.20, Hero raises to $0.80, 6 folds, UTG+1 calls $0.60

Flop: ($1.75) A, 10, J (2 players)
UTG+1 checks, Hero ??

I could swear i saw someone post an extra blind hence the bigger than usual 3bet size. Off to a good start already...

A minbet then a call...he seems a bit cally so hes probably calling my 3bet with most or all of his opening range.
Can probably discount AA-KK since he didnt 3bet.
His range: AK AQ, then various mid to high pp's...

Basically i feel a bit lost on this flop. I think it connects to his range, i have no diamonds, and am facing a shove a lot if i cbet - but im a nit.

What do you guys think