Kings faced with all in on turn

[ATM]

Titan Poker $0.05/$0.10
Full Ring game
only 4 people including myself have bought in for the maximum. Villain has played 3 hands in 1 hour and doesnt raise much

Villain has $4.50 and is sitting one before the CO.

Hero is dealt K [img]/images/graemlins/diamond.gif[/img] K [img]/images/graemlins/spade.gif[/img] and is UTG+1 with $15.60

Hero raises to $.40, folded to Villain who calls $0.40, CO folds, Button folds, SB folds, BB folds.

Flop ($0.95):
Q [img]/images/graemlins/diamond.gif[/img] 2 [img]/images/graemlins/heart.gif[/img] T [img]/images/graemlins/spade.gif[/img]
Hero bets $0.60, Villain calls

Turn ($2.15):
9 [img]/images/graemlins/diamond.gif[/img]
Hero bets $1.50, Villain raises to $3.50 and is all in.
Hero calls $2

Is this just an instant call am i being to much of a nit? (If thats the word to use)
The guy hadnt raised a hand in a while and it wasnt his usual style. Tell me what yous think