Preheat the oven to 375 degrees Farenheit. Prepare a casserole dish with aluminum foil and set aside. Next, prep the zucchini. Cut them all in half lengthwise, then using a small spoon hollow out the middle. This should be relatively easy to remove, then discard of the "zucchini guts" as I like to call them.
Next, sprinkle the hollowed boats with salt, pepper, and italian seasoning. Fill up the zucchini boats with marinara. The amount of marinara will depend on how big your zucchini's are, just use your best judgement!
Top with sliced mozzarella, and plenty of pepperoni. Feel free to add lots of pepperoni!!
Bake for 15-20 minutes. I love my cheese nice and melty so I did broil mine for 1-2 minutes at the end just to get a nice bubbly top. Stick a knife into the zucchini to make sure it is tender.
Time to serve. Top with any other toppings like banana peppers, or drizzle with ranch. Enjoy!