Preheat oven to 400 degrees. Season chicken thighs with salt and pepper then add to a 88″ or 912″ baking dish. Add pesto then use hands to evenly coat. Spoon 1 cup marinara sauce over top of thighs followed by mozzarella cheese then cover tightly with foil and bake for 20 minutes. Remove foil then bake for 10 more minutes, or until chicken is cooked through and cheese is golden brown and bubbly. Cook pasta according to package directions. Prepare salad.