Step 1

Preheat oven to 350°F. Pound chicken breast to flatten to 1/2" or if large, slice horizontally. Season both sides with salt and pepper. Lightly dust each side with flour.

Step 2

In a oven proof skillet over medium high heat add the olive oil and butter. Quickly pan sear the chicken on both sides until lightly browned, about 1-2 minutes each side. Turn off heat and brush each piece of chicken with divided mustard. Top each piece of chicken with divided sliced ham and bake for 15 minutes.

Step 3

Remove from oven and top ham with Swiss cheese. Bake for another 5 minutes and serve immediately.