Hicks had a recurring role on Titus and had roles in various movies and television series before playing the lead in How to Eat Fried Worms. He then appeared in Mostly Ghostly: Who Let the Ghosts Out? alongside many other Disney Channel stars. In 2009, he grabbed the co-lead role of Luther on Zeke & Luther. In 2011, he starred in Lemonade Mouth as Wendell "Wen" Gifford. He co-starred on Pair of Kings as King Boz, replacing Mitchel Musso's character King Brady.
Hicks recorded a remake of the MC Hammer song "U Can't Touch This" with fellow Zeke and Luther co-star Daniel Curtis Lee. The music video for the song was shown June 29, 2009 on Disney XD. He made a remix of the song "In the Summertime" by Mungo Jerry. In late 2010 he wrote and recorded the song "Happy Universal Holidays" with Ryan Newman. In early 2011 he released a song called "Dance For Life" with Drew Seeley for the Disney Channel Original Series Shake It Up, which was featured on Shake It Up: Break It Down. Hicks co-wrote the tracks "Determinate," "Breakthrough" and "Livin' On a High Wire" for Lemonade Mouth. He also has a music video featuring Chris Brochu for his single "We Burnin' Up." In most of his songs, Hicks introduces himself as A-Plus. He is currently signed to Walt Disney Records. In October 2012 he recorded a song for the new book Lemonade Mouth Puckers Up entitled "Don't Stop The Revolution".