It's dinner time!

Ingredients

• 1 red bell pepper, sliced
• 1 tomato, chopped
• 1 clove garlic, minced
• 1 teaspoon dried oregano, or to taste
• salt and ground black pepper to taste
• 1 eggplant, sliced
• 1 zucchini, sliced
• 1 tomato, sliced
• 1 red onion, sliced
• 4 teaspoons olive oil
• 4 slices sourdough bread
• 4 slices mozzarella cheese