Upstate New York gastronomic delight- the spiedie, Binghamton, NY.

This is the closest I have found other than the original by Lupo’s.

Ingredients
• 2-3 chicken breasts
• 1/3 cup olive oil
• 1/4 cup lemon juice
• 1/4 cup white vinegar
• 2 garlic cloves (finely chopped or pressed)
• 1 tablespoon dried parsley
• 1 tablespoon dried basil
• 1/2 teaspoon dried oregano
• 1/2 teaspoon garlic salt
• 1/2 teaspoon salt
• 1/2 teaspoon cracked black pepper
• 3-4 sandwich buns
Directions
Dice chicken breasts into 1" cubes.
Whisk all other ingredients together to form marinade. Set some aside for basting or sauce if desired (though I don't think this is necessary).
Add marinade to chicken and refrigerate overnight, stirring occasionally (the acidic nature of the marinade will 'chemically' cook the meat partially).
Thread 5 or so cubes onto metal or soaked bamboo skewers and grill for a few minutes either side, just until meat is firm (remember, they're already partially cooked by the marinade).
Place two skewers on a fresh bread roll or Italian bread, grip the meat firmly with the bread and pull out skewers.
Enjoy!