Cheesy Loaded Veggie Calzones

Ingredients

• 1, 14-16 oz ball premade pizza dough
• 1 tbsp extra virgin olive oil
• 1 cup chopped mushrooms
• 1 cup diced bell pepper
• 1 cup diced red onion
• ⅔ cup sliced black olives
• ½ tsp salt
• ¼ tsp ground black pepper
• 2 cups shredded mozzarella cheese
• 1 egg + 1 tsp water, beaten for an egg wash