When I made this recipe for a dinner party, everyone couldn’t help but get seconds

1 lb. lasagna noodles
2 cups cooked and shredded chicken
2 jars of Alfredo sauce
1.5 cups shredded mozzarella cheese
1 cup grated Parmesan cheese
1 tsp garlic powder
1 tsp onion powder
1 tsp Italian seasoning
Salt and pepper to taste
4 cups fresh spinach, washed and chopped