In a small bowl, combine the garlic powder, onion powder, mustard powder, salt and black pepper. Set aside.
Lightly spray the Panko with the spray butter and toss to coat. Spread the Panko evening on a baking pan and place in a preheated oven to 350 Degrees F. Bake for about 5 minutes, or until golden brown. Remove the dish from the oven and set aside. Keep the oven on.
Carefully cut a pocket down the middle of each chicken. Be careful not to cut all the way through the chicken.
Place a piece of ham on a cutting board and top with a slice of Swiss cheese followed by a slice of pepper jack and another Swiss cheese slice. Tightly roll up the ham and cheese. Place the ham roll inside the cut chicken. Secure the open edges with toothpicks or a long wooden skewer (as shown in video).
Beat the eggs in a small bowl and dip the chicken breasts in the eggs. Roll around to generously coat. Generously sprinkle the seasoning mixture on the top of each breast and pat in. Roll the chicken around the bread crumbs to coat well on all sides and edges.
Place the chicken on a greased baking sheet and bake for about 30 minutes, or until the internal temperature of the chicken is 165 degrees F.
Meanwhile, in a small saucepan make the mustard sauce by whisking together the butter, dijon mustard, and sour cream. Cook over medium heat until heated warm. Stir in the Parmesan cheese and continue cooking until the cheese has melted. Keep warm.
Remove the chicken from the oven. Spoon the mustard sauce over the chicken and serve.