Kianzad started her martial arts career in boxing when she was around 14 years old and she went on to compete in around 30 amateur boxing fights. In 2010, she competed in the Swedish National Championships in Shootfighting and came in second place claiming the silver medal after losing to Lina Länsberg in the final. The following year, at 19 years of age, she became Swedish Champion in Shootfighting by defeating Genesini Serena by submission in the second round. After turning professional in MMA she revenged her loss against Lina Länsberg in her third fight, which she won by TKO. She racked up five straight wins in smaller organizations before getting signed to Cage Warriors. During this period she transitioned from team Kaisho in Helsingborg, Sweden, to Rumble Sports in Copenhagen, Denmark. As of 2016 Kianzad trains with Arte Suave team in Copenhagen, Denmark
Cage Warriors
In 2014 Kianzad signed with British top promotion Cage Warriors. She made her promotional debut against Megan van Houtum on August 22, 2014 at Cage Warriors 71. She won the fight by TKO in the third round. Kianzad was expected to face Agnieszka Niedzwiedz for the vacant bantamweight title on November 15, 2014 at Cage Warriors 74, but Niedzwiedz was forced to withdraw from the bout due to an injury and Kianzad's opponent was changed to be Finnish fighter Eeva Siiskonen. After five rounds Kianzad defeated Siiskonen by unanimous decision to become Cage Warriors female bantamweight champion.
Invicta Fighting Championship
After staying undefeated through her first 7 fights, and claiming the Cage Warriors title, Kianzad got another step up in her career as she got signed by Invicta FC in March, 2015. She made her promotional debut against Jessica-Rose Clark on July 9, 2015 at. Kianzad won the fight by one-sided unanimous decision. Kianzad was set to face newly crowned champion Tonya Evinger in a title fight on September 14, 2015 at. However, Kianzad missed weight for the fight so it was changed to a non-title bout. She lost by TKO in the second round. She fought Raquel Pa'aluhi on January 14, 2017 at. She lost the fight by submission due to a rear-naked choke in the first round. Kianzad faced Sarah Kaufman on January 13, 2018 at. At weight-ins, Kianzad weighted 136.7 Ibs, missing 0.7 Ibs of the upper limit in bantamweight of 136 Ibs. Kianzad was fined twenty five percent of her fight purse for missing weight. She lost the fight via unanimous decision. Kianzad fought Bianca Daimoni on May 4, 2018 at. At weight-ins, Kianzad weighted 134.8 lbs while Daimoni weighted 139.6, missing 3.6 lbs of the upper limit in bantamweight of 136 lbs and the bout proceeded at catchweight. Daimoni was fined twenty five percent of her fight purse for missing weight Kianzad won the fight via unanimous decision. About a month later she fought Kerry Hughes on June 9, 2018 at Danish MMA Night 1. Kianzad had a dominant performance and won by unanimous decision.
In August 2018 Kianzad's sponsor Combat Dollies revealed that she had been selected as a fighter on, where she would compete at featherweight. Kianzad was the fourth pick by coach Kelvin Gastelum. She fought Katharina Lehner in the quarter-finals of the tournament. She won the fight by unanimous decision. In the semi-finals of the tournament, Kianzad was paired up against Julija Stoliarenko. She won the fight by unanimous decision, securing a spot in the finals.
Ultimate Fighting Championship
Kianzad faced Macy Chiasson in the finals on November 30, 2018 at. She lost the fight via a rear-naked choke submission in round two. Kianzad did not receive a contract from UFC after her loss at TUF 28 Finale.
Post-UFC career
In her return to the European scene, Kianzad dropped back down to the bantamweight division and faced Bellator veteran Iony Razafiarison on May 11, 2019 at Super Challenge 19. She won the fight by unanimous decision.
Return to Ultimate Fighting Championship
Kianzad replaced Melissa Gatto in a short notice bout against Julia Avila on July 6, 2019 at UFC 239. She lost the fight by unanimous decision. Kianzad faced Jessica-Rose Clark in a re-match on November 9, 2019 at UFC Fight Night 163. She won the fight via unanimous decision. Kianzad was scheduled to face Bethe Correia on May 9, 2020 at UFC 250. However, on April 9, Dana White, the president of UFC announced that this event was postponed to a future date The bout eventually took place on July 26, 2020 at UFC on ESPN 14. Kianzad won the fight via unanimous decision. Kianzad entered the UFC rankingsfor the first time in her career after her win over #13 ranked Correia.
