Based on your search for a chicken portion splitter, I would recommend either the Manual Meat Cutter Biltong Slicer for R1299 or the Stainless Steel Multi-functional Adjustable Manual Meat Slicer IB-65 for R520. Both of these options would allow you to easily portion chicken breasts or legs into consistent sizes. The Manual Meat Cutter claims to be suitable for slicing meat and biltong, so it should handle chicken nicely. And the affordable Stainless Steel Multi-functional Adjustable Manual Meat Slicer comes with good reviews for being easy to use and clean. Let me know if you need any other details on these products for portioning your chicken. I'm afraid my search did not turn up any standalone electric chicken portioning machines, but these manual slicers should do the job for smaller batches.
