The Newcastle loan star scored his first goal for Brighton and made the other for Glenn Murray as Brighton clinched a 2-0 over MK Dons.
Winger LuaLua, beginning a second stint on loan from Newcastle, broke the deadlock with a stunning free-kick four minutes after the break, his 25-yard shot carrying so much power that it went through the hands of goalkeeper David Martin.
The Seagulls made the points safe 15 minutes from time when LuaLua's magnificent cross was headed in at the far post by Murray.
A stunning performance from the kid who said last week: "I want to do my best for Brighton, but I want to play for Newcastle in the Premiership next season."