Pepperoni pasta salad is a delicious and easy-to-make dish that is perfect for summer picnics and potlucks. To make the salad, you will need 1 pound of pasta, 1 cup of sliced pepperoni, 1 cup of cherry tomatoes, 1 cup of sliced black olives, 1 cup of cubed mozzarella cheese, 1/2 cup of chopped red onion, and 1/2 cup of Italian dressing. Cook the pasta according to package instructions, then rinse with cold water and drain. Combine the pasta, pepperoni, cherry tomatoes, black olives, mozzarella cheese, and red onion in a large bowl. Pour the Italian dressing over the salad and toss to combine. Chill in the refrigerator for at least an hour before serving.