Pizza Pasta Salad

8 oz. favorite pasta cooked as directed
1 tomato, diced and seeded
8 oz. shredded Cheddar
green onions, sliced
1 1/2 oz. chopped pepperoni
1/3 C. vegetable oil
1/3 C. grated Parmesan cheese
1/4 C. red wine vinegar
1 tsp. dried oregano
1/2 tsp. garlic powder
salt and pepper to taste
croutons if desired

Mix oil, Parmesan cheese, vinegar, and seasonings. Toss together remaining ingredients and pour the dressing over this. Cover and chill for several hours. Before serving toss with croutons. Serves 8.