Preheat oven to 400 degrees F. Spray a 9x13-inch baking dish with nonstick cooking spray; set aside.
In a bowl, mix together cream cheese, garlic, parsley, chives and dill until well combined.
Place chicken breasts on a cutting board. Using a sharp knife, cut a slit in each breast on one side, creating a pocket.
Divide mixture evenly between chicken breasts (approx. 1.2 ounces each) and place stuffed chicken breasts in prepared pan.
Brush olive oil on top and season with salt and pepper.
Bake for 30 minutes, or until cooked through.