Creating Slow Cooker Cheesy Mozzarella Chicken is a breeze when you follow these simple steps:

1. Prepare the Chicken: Season the chicken breasts with salt, pepper, garlic powder, and onion powder.
2. Layer in the Slow Cooker: Place the seasoned chicken breasts in the bottom of the slow cooker.
3. Add Marinara Sauce: Pour the marinara sauce over the chicken, ensuring it is well coated.
4. Sprinkle Italian Seasoning: Sprinkle the Italian seasoning evenly over the sauce.
5. Cover and Cook: Cover the slow cooker and set it to low for 6 to 8 hours or high for 3 to 4 hours.
6. Check for Doneness: Ensure the chicken reaches an internal temperature of 165°F (75°C) before serving.
7. Add Cheese: About 15 minutes before serving, sprinkle the shredded mozzarella and grated Parmesan cheese on top of the chicken.
8. Cover and Melt: Replace the lid and allow the cheese to melt into a gooey layer.
9. Serve: Once the cheese is melted and bubbly, it’s time to serve!

These straightforward steps will guide you through the process of creating this incredible dish effortlessly.