Preheat the oven to (175 C) 350 °F
Mix together the grated mozzarella, grated cheddar, chopped chives, garlic plus seasoning and minced garlic in a mixing bowl and set aside.
In a small mixing bowl, combine the mayonnaise, yellow mustard, and sugar free honey mustard.
Whisk ingredients together and set aside.
Cut a slit in each chicken breast and open each one, folded open on your cutting board.
Using a meat mallet, pound each chicken breast to about 1/4 inch thickness.
Sprinkle each chicken breast with a pinch of salt.
Brush each chicken breast with the mayonnaise mixture (reserve 1/3 to 1/2 for topping)
Divide the mixed cheeses between the four chicken breasts, spreading the cheese out over the surface of the breast.
Carefully roll up each breast.
Spread the canola oil on the bottom of a baking dish.
Place rolled chicken breasts, seam side down, in the baking dish.
Brush the remainder of the sauce over the breasts.
Bake in the center of the oven (uncovered) for 40 minutes.
Check the chicken for doneness using a meat thermometer, inserted into the meat portion of the chicken. The temperature of completely cooked chicken is 170 degrees F (76C)
When done remove from the oven and let sit for 5 to 10 minutes before serving.