Shapen grew up in Shreveport, Louisiana and attended Evangel Christian Academy.[1] He passed for 2,049 yards with 24 touchdowns and five interceptions and also rushed for 324 yards with five touchdowns.[2] Shapen committed to play both baseball and football at Arizona State over offers from Ole Miss, Arizona, Louisiana-Lafayette, and Arkansas State, but later de-committed.[3] He later committed to play at Baylor as a two-sport athlete.[4]
College career
Shapen redshirted his true freshman season.[5] He entered his redshirt freshman season as the backup to starting quarterback Gerry Bohanon. Shapen saw his first serious playing time late in the season in a 20–10 win against Kansas State after Bohannon suffered a hamstring injury.[6] He made his first career start the following week against Texas Tech and completed 20 of 34 pass attempts for 254 yards and two touchdowns in a 27–24 victory.[7] Shapen also started the 2021 Big 12 Championship Game and was named the game's MVP after passing for 180 yards and three touchdowns in a 21–16 win over Oklahoma State.[8][9] He finished the season with a 72.1% completion percentage for 596 yards with five touchdowns and no interceptions.[10]
Shapen won the starting quarterback job for 2022 during spring practices.[11]
On November 27, 2023, Shapen announced that he would be entering the transfer portal.[12] On December 8, he announced that he would be transferring to Mississippi State.[13]