Firstly, preheat your oven to 400 degrees F and line a baking sheet with parchment paper.
Then place each chicken breast between two pieces of plastic wrap and use a mallet to flatten them to about ¼" thick. I have a meat mallet, but you can also use a rolling pin - it will just take longer.
Next, top each chicken with a slice of ham and then a sprinkling of cheese.
I used about 3 tablespoons of cheese on each piece. Feel free to use as much as you want!
Sprinkle the Italian season and garlic salt and pepper on top, then roll up the piece of chicken tightly. I used bamboo skewers to hold each piece together.
Sprinkle your bread crumbs on the top of the chicken breasts and pat down to make sure that they stick during cooking.
Bake for 30 minutes.
The Dijon sauce is probably the hardest part of this recipe!
You're going to melt your butter over medium heat, and once it's melted, add in your flour and whisk until its golden. Add in 1 cup of the milk, then the dijon mustard and then whisk until it's nice and creamy.
It is going to be thick and that's okay! Keep adding the additional cup of milk until you reach the consistency you like. Next, add in your cheese and whisk away!