That is as good as you can do but its probably good practice to keep one board or one side of the board for raw meat and the other side for veg etc.
Interesting research on wood boards and bacteria here http://faculty.vetmed.ucdavis.edu/faculty/docliver/Research/cuttingboard.htm
you shouldnt need to separate veg etc if your going to cook it espesially in the pan with the chicken its just stuff that you may cut up like a nice salad ........... you may notice most bushcrafters done seem to eat a lot of salad .
plus more imporantly you need ot clean the knife before you spread the drippin on hte bread with it and before you stick it into a leather sheath etc
i usually use a plastic board and wash it after he meal with the other stuff everything gets cut up on it and cooked toether usually
ATB
Duncan