Pre-heat oven to 400 degrees F. Rinse and pat dry chicken breast; place on separate cutting board and make a horizontal slit through the thicker side, cutting almost to opposite side. Open breast to form two flaps. Place ham and Swiss cheese on one side of chicken breast, leaving 1/4-1/2 inch" border (depending on size), then fold over filling. Season breast with spices if desired, and drizzle it with olive oil; place on baking sheet. Bake for 25 to 30 minutes turning once half way through cooking, until browned on the outside and cooked through.