Hoping for much better things on SYD-LAX later this month
Keep your expectations sufficiently low and they will be met - that goes for all aspects of flying QF at the moment.
On my recent QF J flights to LHR, DFW and DEL, I can say that the food has been pretty average and certainly not worthy of the price of a J seat when compared to other carriers.
When choosing the meal I would also only choose something that works being slow cooked (e.g. lamb shank, beef cheek etc) as the couple of dishes that I stupidly chose (e.g. lamb loin, beef fillet) that weren't was like trying to eat one of my RM's.