Prepare Cream Cheese Filling: Cut cream cheese into sugar; add egg. Blend at medium speed until fluffy.
Prepare Streusel Topping: Mix flour and brown sugar; cut in butter; mix in pecans and ground cinnamon. Blend thoroughly until crumbly.
Assemble Pizza: Spread cream cheese filling evenly over fresh or par-baked pizza dough. Spread cherry pie filling over cream cheese layer. Sprinkle with streusel topping mixture. Bake at 500 degrees F until cheese filling and streusel is lightly browned (about 7-9 minutes). Cool and serve.
NOTE: You will have enough cherry pie filling, cream cheese filling, and streusel topping for several pizzas.