Creating the Melty Cheesy Chicken Sandwich is easy when you follow these simple steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C) if you want to keep the sandwiches warm while you prepare everything.
2. Prepare Chicken: Take the chicken breasts and season both sides generously with garlic powder, onion powder, paprika, salt, and pepper.
3. Heat Oil: In a large skillet over medium heat, add the olive oil. Allow it to heat for about 2 minutes.
4. Cook Chicken: Place the seasoned chicken in the skillet. Cook for about 6-7 minutes on each side, or until golden brown and cooked through.
5. Melt Cheese: When the chicken is almost done, sprinkle shredded mozzarella cheese on top. Cover the skillet with a lid and allow the cheese to melt for about 2-3 minutes.
6. Toast Bread: While the cheese is melting, toast the bread in a separate pan or toaster until golden brown.
7. Assemble Sandwich: Once the chicken is cooked and the cheese is melted, place the chicken on a slice of toasted bread. Add mayonnaise, lettuce, and tomato as desired.
8. Top and Serve: Finish by placing another slice of toasted bread on top. Serve immediately while hot and melty!

By following these steps, you’ll end up with a delicious Melty Cheesy Chicken Sandwich that will have everyone coming back for more!