$17 for chicken parm as an appetizer at Maria& Enzo's
$29 at Trattoria al Forno
$21 for it as a sandwich at Terralina, or $29 as an entree, or $28 as an entree combo (w/ eggplant parm)
The newly opened off-property Simply Capri does not have chick parm, but eggplant parm appetizer is $14 (worth mentioning because it is owned by the same restaurant group that runs Space 200 and the two Italian eateries in Epcot).
While Olive Garden has it for $18
I was curious after reading your post!
(For what it is worth, I think character meals/'Ohana at $60 per person is a bit crazy, but some of the other TS are not as crazy compared to non-WDW TS. Then again, I'm not as big on all TS-style dining as I once was.)