Step 1

Preheat the oven to 375°F.

Step 2

Slice each chicken breast horizontally in the middle, creating a wide pocket.

Step 3

Season both sides of each chicken breast with salt, pepper, garlic powder, and Italian seasoning.

Step 4

Divide the cheese evenly between all four chicken breasts and stuff the cheese inside each chicken breast's pocket.

Step 5

Heat the oil in a large cast iron skillet over medium-high heat.

Step 6

Add the stuffed chicken breasts to the skillet and sear for 4 minutes until golden brown on each side.

Step 7

Pour the marinara sauce in the pan.

Step 8

Place the skillet in the oven and cook for an additional 15 minutes or until the chicken reaches an internal temperature of 165°F.