Preheat oven to 425F or grill to 350F
Place flatbread on a flat surface
Spoon Alfredo sauce completely covering the crust. Be sure it is a thin layer.
Open the can of chicken and drain.
Using a spoon, chop the chicken up in the can
Spoon the chicken over the sauce, spreading out as completely as possible.
Using a chef knife and cutting board, slice the onion into thin slices
Layer the slices of the onion on the chicken.
Thaw frozen broccoli in the microwave
Spoon broccoli florets over the chicken and red onion.
Sprinkle shredded cheese over the topping mixture
Place on the grill or in the oven and bake until the crust is golden brown and the cheese is melted.
Remove from the grill and place on a cutting board.
Cut the flatbread into various shapes and sizes and serve in a family style feast.