Lay the sliced roasted garlic bread on top of the baking sheet and place into the oven. Cook, watching carefully, until the tops are browned. Spread mayonnaise on top of each slice of bread followed by slices of chicken, avocado, tomato, fresh basil, and mozzarella cheese. Place back into the oven and cook, watching carefully, until the cheese melts. Remove from the oven and sprinkle the top with chopped basil before serving. Enjoy.