Willie James Pye, 59, who was executed by lethal injection on Wednesday, had chicken sandwiches and cheeseburgers for his final meal.
He died at 11:03 p.m. at Georgia Diagnostic and Classification Prison in Jackson, about 45 minutes south of Atlanta, state officials announced.
Pye was sentenced to death for the 1992 murder of his former girlfriend Alicia Lynn Yarborough. He was found guilty of malice murder, kidnapping with bodily injury, armed robbery, burglary and rape.
He had a last meal of two chicken sandwiches, two cheeseburgers, french fries, two bags of plain potato chips and two lemon-lime sodas, according to state prison officials.
A Georgia parole board rejected his request for clemency on Tuesday.
His lawyers say he did not have proper representation from the public defender at his 1996 trial.
"Had defense counsel not abdicated his role, the jurors would have learned that Mr. Pye is intellectually disabled and has an IQ of 68," they said, according to the Associated Press.
His lawyers claim Pye suffered from frontal lobe brain damage, potentially caused by fetal alcohol syndrome, which harmed his planning ability and impulse control.
Defendants who are intellectually disabled are ineligible for execution. Experts said that Pye meets the criteria, but that the burden of proof in Georgia was too high to reach, his lawyers argued.
The Georgia Parole Board rejected those arguments.
There are presently 36 men and one woman under death sentence in Georgia.
There have been 75 men and one woman executed in Georgia since the U.S. Supreme Court reinstated the death penalty in 1976.