9 lasagna noodles
2 cups cooked, shredded chicken
3 cups milk
1/2 cup unsalted butter
1/2 cup all-purpose flour
1 cup grated Parmesan cheese
2 cups shredded mozzarella cheese
1 teaspoon garlic powder
1 teaspoon onion powder
1 teaspoon Italian seasoning
Salt and pepper, to taste
2 cups fresh spinach, chopped
1 cup ricotta cheese