His third marriage was to Lyssa Rae Brittain (), an American businesswoman who is also famous as a housemaker, and is referred to as "Big Lyssa." The marriage was reportedly performed by a Native American chief in the Colorado mountains in 1982, and ended on November 20, 1991. The two had met just days prior in a bar, while Lyssa was still married to her husband, an Assemblies of God minister, though the two had since separated due to his infidelity. According to Chapman, he offered Lyssa $1,000 to have his child, to which she agreed. They had three children together, Barbara Katie Chapman (June 8, 1982 – May 19, 2006), Tucker Dee Chapman (September 8, 1983), and Lyssa Rae Chapman (June 10, 1987). The family lived in Denver, Colorado, in a home left to Chapman by his grandfather Mike, along with Duane Lee and Leland. According to Chapman's daughter Lyssa, she and her siblings reportedly endured a hard childhood, with incidents of sexual abuse and substance abuse plaguing the family.