Zepeda made his professional debut on 14 November 2015, scoring a third-round knockout (KO) victory against Alonso Salvatierra in Cabo San Lucas, Mexico.
[2] After compiling a record of 11–0 (9 KOs), he defeated Juan Pablo Borbon via third-round corner retirement (RTD) on 25 October 2017, capturing the vacant WBF Mexican lightweight title in Metepec, Mexico.
[3] Following a technical knockout (TKO) victory in a non-title fight against Jesus Acosta in February 2018,[4] Zepeda was scheduled to make the first defence of his title against Pedro Solís on 27 April in Culiacán, Mexico.
[10] After four stoppage victories in non-title fights, Zepeda faced undefeated prospect Hector Tanajara Jr. on 9 July 2021, at the Banc of California Stadium in Los Angeles, with the vacant WBA Continental Americas lightweight title on the line.
Zepeda emerged victorious, capturing the vacant WBA regional title via sixth-round RTD after Tanajara's corner called a halt to the contest before the start of the seventh round.