The actor shed as many as 350 pounds earlier this year and underwent a kidney transplantation which experience he would recount on August 5.
"30 Rock"star Grizz Chapman's appeal for a kidney donor was a success - the funnyman underwent a transplant last month. The actor, who suffers from severe hypertension, was told by doctors he would have to shape up before they could perform kidney replacement surgery.
Chapman, who plays Tracy Morgan's sidekick on the hit TV comedy, slimmed down to 350 pounds earlier this year after embarking on a healthy lifestyle. And the weight loss enabled Chapman to undergo a lifesaving kidney operation at New York's Montefiore Medical Center in July, according to the Associated Press.
The star is set to open up about his experience at an event in the Big Apple observing National Minority Organ Donor Awareness Day on Thursday, August 5.