Preheat oven to 350°F and lightly grease a baking tray.
Open rolls and layer meats and cheese.
Cover loosely with foil; bake 10–12 minutes until cheese melts.
Combine olive oil, vinegar, and spices, toss with onions, peppers, and jalapeños.
Spoon topping over warm subs, add lettuce, and sprinkle oregano.
Return to oven for 5 minutes if toasted edges are desired.
Slice and serve warm with dill pickles or chips.
