1. Preheat grill to 500 degrees. Season the chicken with Cajun seasoning. add the chicken and cook until 165 degrees internal temperature. Remove the chicken from the grill, shred, and set aside.
2. Slather the flatbread crust with BBQ sauce, then top with mozzarella, chicken, and sliced onions. Repeat this process one more time, dust with Cajun rub, then place the flatbread on the grill.
3. Once the cheese has melted, remove the flatbread. Slice into quarters and top with parsley. Serve & enjoy!
**If cheese is not sufficiently melted to taste, either use a culinary torch or broiler for about 30 seconds to finish off. This recipe can work on a grill, griddle or oven!