Dicker was born in Hong Kong and spent the first eleven years of his life in Shanghai where his father and mother worked.

During his high school career, Dicker was a two-time all-state selection and was the starting kicker for three seasons, winning the Texas 6A Division I State Championship in 2016.

[3] Additionally, Dicker set a Lake Travis High School record with a 53 yard field goal.

He also gained notoriety as "Dicker the Kicker" (by play-by-play announcer Gus Johnson of Fox Sports) when he kicked the game winning 40 yard field goal against Oklahoma in the 2018 Red River Showdown.

[20] While filling in for the injured Jake Elliott, he made two field goals in his debut against the Arizona Cardinals on October 9, including a game-winning 23-yard kick in the final two minutes.

[25] On November 6, 2022, Dicker made two field goals, including a game-winning 37-yard kick as time expired against the Atlanta Falcons.

[29] On December 18, Dicker kicked a game-winning field goal against the Tennessee Titans to move the Chargers into a Wild Card position.

[36] The most recent player to achieve this was Ray Wersching, coincidentally also playing for the Chargers, then based in San Diego.