Don't make him dumplings anymore — he's overdosed on them.
Tips
grammar
Resultative compound: 吃 (eat) + 伤 (injure). The 伤 carries the figurative sense 'to be put off / damaged by'. Compare 看伤 (kànshāng, sick of watching), 玩伤 (wánshāng, played out).
register
Colloquial. Always about food, and always about your own past overconsumption causing present aversion.