Heat a small skillet over medium heat. Add pancetta; cook 4 minutes or until crips, turning occasionally. Drain on paper towels. Let cool and then crumble and set aside.
Coat inside of crockpot (use a crockpot little dipper if you have one)with nonstick cooking spray. Add cream cheese, swiss cheese, whipping cream, 1/4 cup green onions, horseradish, worchestershire and mustard. Cover; heat 1 hour then stir. Cover; heat 30 minutes or until cheese is melted.
Stir in all but 2 tsp. pancetta. Serve in little dipper crockpot or if needed, transfer to a bowl. Sprinkle remaining pancetta and additional green onions on top. Serve with potato chips.