I think the re-eating may be a zon-thing, but Kiwi will occasionally wipe what came out as he wallowed it around on my husbands shirt. Lucy would only regurgitate "for me" when I was knock-down sick (I think she wanted to nurse me back to health lol) and would actually try to get it in my mouth. It just ended up on my neck and down my shirt. Her and her mate Barney would regurgitate in each others beaks occasionally. Gross, but kinda sweet (they've been a bonded pair for over 40 years). I would't be too concerned if he isn't displaying other signs of illness. This is the time of year when they start their breeding season, and regurgitating is often a sign they like you and want you to be their girl/boyfriend.
Wanted to add- regurgitation is a 100% normal, healthy and natural behavior for parrots even if it's gross to us. In fact, it's a very good indicator of a happy and well adjusted bird. While you aren't likely to be able to eliminate it completely, you can discourage it somewhat by ignoring it when he starts it and reinforcing other more desirable displays of affection from your bird. If he's regurgitating, just turn around, leave the room or stop paying attention so he sees (and hopefully understands) it is not something that grabs your attention. When he displays other affectionate behavior (kisses, cuddling, preening), strongly encourage those by giving verbal praise, petting, a small treat or whatever he likes to teach him those behaviors will grab your attention. That will encourage him to repeat the behaviors he gets rewarded for, not the ones he gets no attention over.