Begin by boiling a large pot of salted water, then cook the lasagna noodles according to package directions until al dente, usually around 8-10 minutes. Drain the noodles and lay them flat on a clean kitchen towel to prevent sticking.

In a medium bowl, combine the ricotta cheese with the well-drained, chopped spinach. Season the mixture with salt and pepper to taste, blending thoroughly until it's smooth and vibrant.

Grab a 9x13 inch baking dish and spread a thin layer of marinara sauce across the bottom. Start layering your Ghostly Lasagna by placing noodles down first, followed by a generous scoop of the ricotta-spinach mixture, shredded chicken, and a sprinkle of mozzarella cheese. Repeat these layers until you use all ingredients, making sure to finish with a layer of sauce and a healthy topping of mozzarella.

Using the leftover mozzarella, cut out playful ghost shapes. Arrange these mozzarella ghosts on top of your lasagna and place black olive slices on them to resemble eyes.

Cover the assembled Ghostly Lasagna with aluminum foil and bake in a preheated oven at 375°F (190°C) for 30 minutes. After that, remove the foil and sprinkle grated Parmesan over the top. Bake uncovered for an additional 10-15 minutes until the cheese is bubbly and golden brown.

Allow the baked Ghostly Lasagna to cool for about 10 minutes before slicing into portions. Garnish each slice with fresh basil leaves or cracked black pepper.