Italian Pasta Salad with Homemade Creamy Dressing

Ingredients

• 1 pound tricolor rotini pasta
• ¾ cup greek yogurt
• ¼ cup olive oil
• 2 tablespoons red wine vinegar
• 1 garlic clove (grated)
• 1 shallot (minced)
• 2 teaspoons Italian seasoning
• ½ teaspoon salt (plus more for pasta water)
• ½ teaspoon black pepper
• 1 6-ounce can sliced black olives
• 1 green bell pepper (diced)
• ½ English cucumber (diced)
• 1 pint grape tomatoes (halved)
• 8 ounces mini mozzarella cheese balls (ciliegine size)