Dzienny is from Toledo, Ohio, and is the daughter of Mike and Tara Dzienny. She is the youngest of three children. Dzienny began modeling at the age of five after winning a contest sponsored by L'Oréal, and primarily modeled during summers. Soon after taking up modeling, she began studying tap, jazz, ballet, and hip hop dancing. After landing the Supah Ninjah's pilot, Dzienney and her mother moved to Los Angeles in November 2010.
During her freshman year in high school, Dzienny auditioned for the part of Amanda on Supah Ninjas, a process that involved approximately half a dozen subsequent auditions.
|2011–13||Supah Ninjas||Amanda McKay||Main role, 39 episodes|
|2012||Up All Night||Kylie||Episode: "Baby Fever"|
|2012||Fred: The Show||Holly||4 episodes|
|2013||See Dad Run||Chelsea||Episode: "See Dad Throw a Birthday Party"|
|2014||Side Effects||Rachel||Episode: "Kiss You"|
|2014–15||Chasing Life||Greer Danville||Recurring role, 14 episodes|
|2015||State of Affairs||Stacey Dover||Episodes: "Ghosts", "Cry Havoc"|
|2016||Best Friend's Brother||Mia Denzing||Recurring|