Tried this code and it worked!
Includes: 1 Whole Roast Chicken, 6 Pieces of our NEW crunchy Fried Chicken, 2 Large Chips, Large Gravy & 1.25L Coke.
Seemed pretty popular last time https://www.ozbargain.com.au/node/698942
Edit: if you are having trouble with the link, try opening the website or app and typing in the coupon code manually.
I had a bit of trouble using the link. Insted, I typed the voucher code into the box provided on the Red Rooster website, and it worked from there.