Western Omelet Quiche

Ingredients

• 1 (9 inch) prepared pie crust
• 1 cup diced ham
• 2 1/2 cups shredded mild Cheddar cheese
• 1 1/4 cups milk
• 4 eggs, whisked
• 1 red bell pepper, diced, or more to taste
• 1 medium onion, diced
• 1 clove garlic, minced
• 1 teaspoon ground black pepper
• 1/2 teaspoon white sugar
• 1/2 teaspoon salt