Chicken Parmesan grilled cheese sandwich

Ingredients:
2 slices of sourdough or Italian bread (or your favorite bread)
1 small chicken breast (or 1 breaded chicken cutlet)
1/2 cup marinara sauce (homemade or store-bought)
2 slices of mozzarella cheese (or 1/2 cup shredded mozzarella)
2 tablespoons grated Parmesan cheese
1 tablespoon butter, softened
1 tablespoon olive oil (for cooking the chicken)