Step 1: Prepare the ChickenPreheat your oven to 375°F (190°C). Pat the chicken breasts dry with paper towels – this crucial step ensures the coating sticks properly and creates that perfect crispy exterior. If your chicken breasts are particularly thick, consider butterflying them or using a meat mallet to pound them to an even thickness of about 1/2 inch. This promotes even cooking and reduces the overall baking time by up to 10 minutes.Step 2: Create the Cracker MixturePlace the Ritz crackers in a ziplock bag and crush them using a rolling pin until they reach a coarse breadcrumb consistency, leaving some slightly larger pieces for texture. Pour the crushed crackers into a large bowl and add the garlic powder, Italian seasoning, paprika, salt, pepper, and Parmesan cheese. Mix thoroughly to ensure even distribution of seasonings. The Parmesan adds a delicious umami flavor that complements the buttery crackers perfectly.Step 3: Prepare the Creamy BaseIn a medium bowl, whisk together the cream of chicken soup, sour cream, and milk until smooth. This velvety mixture serves as both a marinade and a sauce, infusing moisture and flavor into the chicken while creating a luscious base for your casserole. For additional flavor depth, try adding 1 tablespoon of Dijon mustard or 1 teaspoon of ranch seasoning mix.Step 4: Assemble the CasseroleSpread about 1/3 of the creamy mixture on the bottom of a 9x13 inch baking dish. Arrange the chicken breasts in a single layer over the mixture. Pour the remaining creamy mixture over the chicken, ensuring each piece is well-coated. Drizzle half of the melted butter over the chicken, then top generously with the seasoned cracker mixture. Finish by drizzling the remaining butter over the cracker topping to ensure maximum crispiness.Step 5: Bake to Golden PerfectionBake uncovered in the preheated oven for 30-35 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and the topping is golden brown and crispy. Let the casserole rest for 5-10 minutes before serving – this allows the juices to redistribute throughout the chicken and the sauce to thicken slightly, resulting in maximum flavor and moisture