Thaw scallops, if frozen. Rinse scallops; pat dry with paper towels. Set aside. In a medium saucepan cook pasta according to package directions, adding asparagus for the last 3 minutes of cooking; drain. Return pasta mixture to hot saucepan; cover and keep warm.
Meanwhile, in a large skillet heat butter over medium-high heat until melted. Add scallops and garlic; cook for 4 to 5 minutes or until scallops are golden, turning once. Transfer scallops to pasta mixture, reserving drippings in skillet
Whisk evaporated milk into the reserved drippings; reduce heat to medium-low. Add cream cheese, Parmesan cheese, lemon juice, and lemon-pepper seasoning. Cook and stir until cheeses are melted and mixture is heated through.
Add pasta mixture to cheese mixture; toss gently to coat. If desired, sprinkle each serving with parsley.