The statements are not sitting well with the National Association to Advance Fat Acceptance which is now calling for Chuck to apologize, ASAP.
"Making slurs about body size is just as offensive as making comments about body color," spokesperson Peggy Howell tells TMZ Sports.
"One would think being a black man, he'd be more sensitive to having his physical body criticized. It's totally out of line. He should absolutely apologize."
The President of the Obesity Action Coalition has also issued a statement expressing "extreme disappointment" with Charles.
"As a former NBA player and sports entertainment figure, Mr. Barkley should encourage equality and respect among society and not look to shame or segment one population because of their size."
"Obesity is a serious medical condition and not a joking matter."
We reached out to Charles for comment -- so far, no word back.