Definitely a week
Roast it the first day and just look at it whilst eating something else
Second day serve ‘picky tea’ for the kids that has ‘bits’ including naice ham but no chicken. They can eat this in front of the telly as ‘a special treat’.
Third day you can smell it (bulked up with lentils) (other dried pulses are available)
Fourth day you do yellow label aisle blitz where there will be amazing bargains that feed your family for so many days you don’t need the chicken and especially if you have been and bought a 90kg bag of rice as it’s cheaper like that even paying extra mortgage for an additional kitchen to store it in.
Fourth day fajitas. Obviously
Fifth day something including pesto. Obviously. (Extra points if you made it from something Green you picked yourself like nettles from the local rec)
Sixth day stock from the carcass that is greasy and revolting but has the taste of pure humble brag so you will enjoy it anyway.
Seventh day the chicken will rise again and you can repeat the whole process.