Piccolotti made his professional MMA debut in November 2013. He competed exclusively in Dragon House, a promotion based in the San Francisco Bay Area, for the first year of his career. After compiling an undefeated record of 4–0, Piccolotti signed with Bellator.
Bellator MMA
Piccolotti made promotional debut against Andrew Ramm at Bellator 133 on February 13, 2015. The bout took place at a catchweight of 160 lbs. He won the fight via unanimous decision. In his next bout, Piccolotti met Salvador Becerra at the inaugural "Dynamite" event,, on September 19, 2015. He won the fight via neck crank submission in the second round. Piccolotti faced Mario Soto on December 4, 2015 at Bellator 147. He won the fight via submission, due to a rear-naked choke, in the second round. Piccolotti was scheduled to face Jordan Parsons at Bellator 154 on May 14, 2016. This bout did not occur, however, as Parsons was struck in a hit-and-run incident and ultimately succumbed to his injuries. Piccolotti instead faced Ray Wood and won the fight via submission in the first round. In his post-fight interview, Piccolotti dedicated the victory to Parsons. In his highest profile fight in the promotion at the time, Piccolotti faced Brandon Girtz at Bellator 165 on November 19, 2016. He won the bout by unanimous decision. Piccolotti faced Goiti Yamauchi at Bellator 183 on September 23, 2017. He lost the bout via rear-naked choke submission in the first round. After receiving his first professional loss at the hands of Yamauchi, Piccolotti was expected to make a quick return against Derek Anderson at Bellator 189 on December 1, 2017. Due to an injury, Piccolotti's opponent was changed to David Rickels. He lost the 160 lb catchweight fight by unanimous decision. Piccolotti faced Carrington Banks at Bellator 199 on May 12, 2018. He won the fight via rear-naked choke submission in the third round. Piccolotti faced James Terry on September 29, 2018 at Bellator at Bellator 206. He won the fight via unanimous decision. Piccolotti next faced Benson Henderson at Bellator 220 on April 27, 2019. He lost the fight via split decision.
