[1] Zeiss made her elite gymnastics debut at the 2021 Winter Cup where she placed eleventh in the all-around.

[5] In July Zeiss was selected to compete at the Pan American Championships alongside Skye Blakely, Kayla DiCello, Zoe Miller, and Elle Mueller.

[6] During the team final Zeiss competed on vault, balance beam, and floor exercise, helping the United States win silver behind Brazil.

[10] In October Zeiss announced her verbal commit to compete for the LSU Tigers gymnastics team.

[15] In November Zeiss signed her National Letter of Intent with the LSU Tigers.