Hope you don't mind. I've doodled on your photo to show you the exact problem.

Top left: obviously, the chick that belongs to the threadstarter, minus doodles.
Top right: a pair of lines demonstrating where the edges of the scales are supposed to be; 'good' scales. The same line of scales that go along the main toe are supposed to continue to march directly up the shin. The scales from outside and inside toes are supposed to flank it on their respective sides of the shin.
Bottom left: A line showing the edge of the outside toe's scales marching right across the main toe's scaling and pushing it towards the inside of the knee. This makes the outside toe 'dominant'. Unfortunately it is accompanied by structural deformity, which causes spraddling, as you can see. The line I drew shows you the edge of the scales. In this case, this line should only be following the shinbone up to the outside of the knee, not trying to go to the inside of the knee.
Bottom right: A line indicating the other sort of spraddling, (not present in this chick) where the inner toe's scales push the main toe's scales towards the outside of the knee.
Hope this helps. If anyone's offended at the use of the photo, just let me know, I'll take it down and delete.