Dawkins received an invitation to the Senior Bowl and started at guard for the North team. The North lost 15-16 to the South and he was named the Senior Bowl's top offensive lineman. He improved his draft stock after practicing and performing well during the Senior Bowl. He attended the NFL Combine and completed all of the combine drills and positional drills. At Temple's Pro Day, Dawkins opted to attempt the vertical jump again and added two inches to his vertical from the NFL combine. He performed well in the positional drills for the 40 scouts and representatives from all 32 NFL teams scouted him and 13 other teammates, including Temple's feature prospect, Haason Reddick. Dawkins had private workouts with four teams, that included the San Francisco 49ers, Carolina Panthers, Denver Broncos, and Indianapolis Colts. The majority of NFL draft experts and analysts projected him to be a second round pick. He was ranked the second best guard in the draft by Sports Illustrated, was ranked the third best guard by ESPN, the third best interior offensive lineman by NFL analyst Mike Mayock, and was ranked the fourth best offensive tackle by NFL analyst Bucky Brooks and NFLDraftScout.com. The Buffalo Bills selected Dawkins in the second round of the 2017 NFL Draft. Dawkins was the second offensive guard drafted in 2017, behind Western Kentucky guard Forrest Lamp. On May 19, 2017, the Buffalo Bills signed Dawkins to a four-year, $4.18 million contract with $1.83 million guaranteed and a signing bonus of $1.18 million. He played in all 16 games, starting 11 at left tackle in place of Cordy Glenn. Dawkins received an overall grade of 74.5 from Pro Football Focus in 2017. Dawkins entered training camp in 2018 slated as the starting left tackle after the Buffalo Bills traded Cordy Glenn to the Cincinnati Bengals. Head coach Sean McDermott named Dawkins the starting left tackle to begin the regular season in 2018. Dawkins caught his first career pass and touchdown Week 10 of the 2018 season against the New York Jets from QuarterbackMatt Barkley. He caught a second touchdown pass from Josh Allen during Week 16 of 2019 against the New England Patriots.