Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper or foil.
In a large plastic bag (we like to use a 1 or 2 gal. ziplock bag) or very large bowl combine all the crackers.
Combine the 1/2 cup of oil and all the seasonings (.5 oz ranch seasoning, 2 teaspoons Italian seasoning, 1 teaspoon garlic powder, and 1 teaspoon onion powder). Stir until well combined.
Pour the seasoned oil into the bag of crackers. Don’t just dump the oil seasoning in one spot over the crackers. Pour it evenly over the crackers that are in the bag.
If using a bag, seal the bag but make sure to leave a bunch of air in the bag so the crackers have room to move around. Gently turn and tumble the crackers so the seasoning can completely coat the crackers.
Place the seasoned crackers in a single, even layer on the prepared baking sheet pan. Have the sides of the crackers touching.
Top the crackers with a light layer of cheese. This first layer of cheese keeps the cracker from getting soggy from the sauce.
Dollop a light layer of sauce over each cracker. Don't put too much. Will make the crackers soggy.
Top with a little more cheese. This will melt and help pepperoni stick to the cracker.
Top with the pepperoni on each cracker.
Bake at a 350°F (175°C) for about 15 minutes or until the cheese is golden. Serve warm while cheese is still melty.