The chicken cutlet hero is a New York sandwich, and the word hero is doing as much defining work as the cutlet. The cutlet itself, a chicken breast pounded thin, breaded, and fried flat, is shared with Philadelphia and half the Northeast. What makes this the New York version is the long Italian hero roll it goes on and the deli grammar around how it gets dressed: the cutlet is the constant, and the roll and the dress are the regional signature.
The craft is in keeping a flat fried crust crisp inside a long roll. Pounding the breast thin is not for tenderness alone; it gives an even surface that fries fast and lays flat against the bread instead of bowing it open, so the roll closes properly over the full length. The hero roll has to thread the standard sub problem: a crust with enough structure to carry a heavy load without folding, and an interior tender enough not to shred the cutlet's coating. Where this build declares itself is in the dress. The New York deli reading runs toward fresh-mozzarella-and-roasted-pepper, or lettuce-tomato-mayo built cold, or the cutlet laid under tomato sauce and mozzarella as a parm hero, with the sauce kept tight so the breading does not go to mush before the sandwich is eaten. The cutlet is usually layered or shingled the length of the roll so every bite gets crust rather than one thick slab in the middle, which is the same engineering the Italian combo hero uses. Built cold and dry, it holds for a packed lunch; built hot under sauce, it has to be eaten fast before the crust surrenders.
Its closest relative is the Philadelphia chicken cutlet hoagie, the same cutlet on a different roll with a different default dress, and the broader parm-hero and Italian-combo builds run the same long-roll logic. Each of those deserves its own article rather than being crowded in here.