Toss hot pasta with a ½ cup pesto sauce place in 8x8 baking dish.
Top with marinara and mozzarella and set the stuffed chicken breasts on top of the pasta.
Bake for 35 minutes at 375 degrees. Remove and top breasts with remaining 2 tablespoons pesto and parmesan cheese. Return to oven and melt cheese - about 5 minutes