"everything" pasta salad

Ingredients

• - 1 pound rotini pasta,
• - 2 cups chicken breast, cooked and diced
• - 1 medium red bell pepper, diced
• - 1 medium green bell pepper, diced
• - 3/4 cup red onion, diced
• - 1 (3-ounce) can black olives, drained and halved
• - 1 (4-ounce) package shredded mozzarella
• - 1 1/2 tablespoons dijon mustard
• - 2 ounces parsley, chopped
• - 1/4 cup red wine vinegar
• - 1/2 teaspoon salt
• - 1/4 teaspoon pepper
• - 3/4 cup olive oil