It isn't worrying behavior overall, however, it sounds as though Kiger has figured out how to get "extra" food by begging Pip to feed him.
As long as each are maintaining their healthy weights, then it's no cause for worry.
However, if Kiger starts gaining and Pip starts losing weight, then you'll need to separate them at that time.
I had one budgie that was constantly feeding all the others to his own detriment.
He finally stopped but when it was happening I was concerned and ready to cage him separately to ensure he didn't become too thin and mal-nourished from feeding the others.
Good luck with Kiger and Pip and let us know how things progress.