In a bowl, add chili, onion, garlic and pepper powder, salt, and Italian herbs. Mix well and reserve the seasoning mix for later use
In a bowl, add cream cheese, and soften it using a fork
Add parmesan cheese, mozzarella cheese, pepper flakes, pepper powder, onion, garlic, mayo, and spinach. Mix well until everything is combined. Reserve this filling aside
Place the chicken breast on the cutting board and make a slit using a sharp knife on the sides of the breast.
Add a tsp of oil over the chicken breasts and nicely rub it to coat them. Now add the reserved seasoning mix all over the breasts and rub well to coat
Add 2 tbsp of the reserved cream cheese spinach filling inside the pockets of each breast.
Transfer the stuffed chicken breast to an oil-greased baking tray
Bake the breasts in a preheated oven at 375° for 30 to 40 minutes or until the chicken is cooked well. Once done, remove the Baked Spinach Stuffed Chicken from the oven
Serve this Cheesy Spinach Stuffed Chicken Breast as it is or with some mashed potatoes, roasted potatoes, roasted green beans, roasted cauliflower, salads, or rice of your choice