Combine ham, cheese, cream cheese, mushrooms and oregano. Mix well.
Make Fathead according to recipe adding garlic powder and salt.
Cut into 4 equal pieces and roll out into circles. Divide ham and cheese mix between circles, placing on one half. Fold over, crimp and seal the edges.
Place on lined baking trays and spray with olive oil. Bake at 180C for approximately 15 minutes or until golden and browned.