Heat olive oil in a skillet over medium heat. Sauté garlic, onion, carrots, and celery until soft. Add shredded chicken, Buffalo sauce, and marinara sauce, stirring well.
In a bowl, mix cottage cheese, eggs, Parmesan, ranch seasoning, and black pepper until smooth.
In a greased 9x13-inch baking dish, layer Buffalo chicken sauce, lasagna noodles, and cottage cheese mixture, repeating until all ingredients are used.
Top with shredded mozzarella cheese and cover with foil.
Bake at 375°F (190°C) for 30 minutes, then remove foil and bake for another 15 minutes until golden and bubbly.
Let the lasagna rest for 10 minutes before slicing.
Drizzle with ranch dressing and garnish with fresh herbs, if desired.
Serve hot with Crockpot Green Beans or Crockpot Baked Potatoes for a perfect meal!