The Ultimate Pasta Salad

1 (16 ounce) package uncooked tri-colored spiral pasta

1 head fresh broccoli, cut into bite size pieces

1 head fresh cauliflower, chopped into bite size pieces

1 red onion, chopped

2 teaspoons minced garlic

8 ounces pepperoni slices, cut into quarters

1 (8 ounce) package mozzarella cheese, cut into cubes

1 (6 ounce) can large pitted black olives, drained and sliced

½ cup olive oil, or to taste

½ cup red wine vinegar, or to taste

salt and pepper to taste

Italian seasoning to taste