Preheat your oven to 450F. Lightly flour your surface and use your hands or a rolling pin to stretch the dough out to an 8" round roughly. Then use your fists and gravity to toss the dough to a 12 or 14" round.
Place the dough on top of the pizza pan. Top with the pesto sauce, 3/4 of the cheese, chicken and onions leaving a 1" border.
In a small bowl add the olive oil, red pepper spice mix and grapes. Mix to evenly coat. Top the pizza with the grapes evenly and top with the remaining cheese.
Bake for 8-10 minutes or until crust is browned slightly and cooked through and the cheese has melted. Remove from the oven and if you like top with some fresh basil. Slice and serve.
Notes
Leftover pizza can be stored tightly wrapped in the fridge for up to 3 days.