PREHEAT oven to 350°F.
RINSE pork in cold water and pat dry with paper towels. Place on a small baking sheet with sides. Spread 2 tablespoons pesto over pork.
BAKE tenderloin for 35 to 40 minutes or until desired degree of doneness.
WHEN pork is almost done, prepare pasta according to package directions. Drain, reserving some pasta water. Return pasta to pot; stir in remaining pesto and half-and-half. Add a small amount of pasta water if necessary to loosen pasta. Cover and keep warm.
REMOVE pork from oven; cover with foil. Let stand for 5 minutes.
PLACE pasta on a serving platter. Slice pork and arrange over pasta. Sprinkle with pine nuts.