On the website's calculator all i can find is:
Tesco, whole roast chicken CHILLED 100g EE 4 Red 4 and Green 10 syns.
It's worth noting that the chilled sliced chicken breast which is sold skinless is free on red and EE so its probably true about removing the skin and any visible fat to make it free on EE/original x
Tesco, Whole Roast Chicken, chilled , 100g javascript:__doPostBack('ctl00$ctl0...1$GridView_Products$ctl07$LBADDExtraEasy','')4 4 javascript:__doPostBack('ctl00$ctl0...h1$GridView_Products$ctl07$LBADDOriginal','')10 javascript:__doPostBack('ctl00$ctl0...arch1$GridView_Products$ctl07$LBADDGreen','')
Tesco, Whole Roast Chicken, chilled , 100g javascript:__doPostBack('ctl00$ctl0...1$GridView_Products$ctl07$LBADDExtraEasy','')4 4 javascript:__doPostBack('ctl00$ctl0...h1$GridView_Products$ctl07$LBADDOriginal','')10 javascript:__doPostBack('ctl00$ctl0...arch1$GridView_Products$ctl07$LBADDGreen','')