Cheesy Loaded Chicken Noodle Casserole

Name: Cheesy Loaded Chicken Noodle Casserole
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Cuisine: American
Ingredients: 1 medium yellow onion, diced; 4 oz cremini or baby portobello mushrooms, chopped; 10.75 oz can cream of chicken soup; 1 cup sour cream; 1 1/4 cups half and half; pinch kosher salt; 1/4 tsp black pepper; 1/4 tsp garlic powder; 10 slices bacon, diced ((divided)); 2 cups cooked and shredded chicken ((leftover chicken or a rotisserie chicken is great for this)); 1 cup frozen peas; 12 oz extra wide egg noodles, cooked 1 minute shy of al dente and drained; 1/2 cup shredded Colby cheese (, (divided)); 2/3 cup shredded mozzarella cheese (, (divided)); 1/2 cup shredded parmesan cheese (, (divided)); 4 oz French's Crispy Fried Onions (, (divided))