The singer-and-actress had gained 21 out of 30 points for her routine, but it was not enough to save her and professional partner Tony Dovolani when they found themselves in the bottom two alongside Rob Kardashian and Cheryl Burke.
Chynna had won praise for her posture but forgot some of the choreography to her 'Mission Impossible' routine and acknowledged that was likely to have been one of the reasons why she was voted off the show.
Upon hearing she would be leaving the programme, Chynna said: "I'm disappointed, I'm sad. But I have to take responsibility, I messed up. But I had an amazing partner. I love you, Tony ... He's been there for me 100 percent."
The 43-year-old star - who has children Jameson, 11, Vance, nine, and seven-year-old Brooke with husband William Baldwin - later revealed she had an unusual reason for agreeing to appear on the show after striking a deal with her spouse.
She explained to TV talk show host Jimmy Kimmel: "I said if you can get me on 'Dancing', then I'll do it. If I win you get a vasectomy."
Chynna appeared alone on the talk show as partner Tony had sprained his ankle and had to go to the hospital to get it checked out.