Preheat oven to 400 degrees F.
In a large bowl, combine the softened cream cheese, cheddar cheese, cooked broccoli, 1/2 tsp granulated garlic, scallions, salt, and pepper. Mix well.
In a small bowl combine the remaining granulated garlic, onion powder, paprika, and Italian seasoning.
To butterfly the chicken, place your hand on top of the chicken breast, slice horizontally, and stop about a half-inch from the opposite side. Season the chicken breasts on both sides with salt, pepper, and the spice blend.
Spread about 1/4 cup of the broccoli and cheese mixture on one side of the chicken. Close the chicken breasts and use toothpicks if needed.
Heat 2 tbsp of oil in an oven-safe skillet over medium-high heat. Cook the chicken for 3-4 minutes on each side and then place it in the oven and cook for 12 minutes or until the thickest part of the chicken reaches an internal temperature of 165 degrees F.
Remove the toothpicks and enjoy warm!