Pellissier was signed by Chievo in 2000, but was loaned to Ferrara-based club SPAL during his first year with the Verona-based side; during his one and a half seasons with SPAL, he scored 17 goals in 44 appearances. He then returned to Chievo for the 2002–03 season, making his Serie A debut on 22 September 2002, when he played for 46 minutes in a 2–1 loss against Brescia Calcio. On 3 November, Pellissier played as a 63rd-minute substitute for Luigi Beghetto and scored his first goal in Serie A, that was also the only in that match against Parma F.C. During that season, he played 25 matches in the league and scored five goalstwo of which were scored in consecutive matches against Piacenza and Como. Outside the Italian League, Pellissier appeared four times in the Coppa Italia, and once in the 2002–03 UEFA Cup as a 79th-minute substitute for Massimo Marazzina in the second leg of the club's first round match against Red Star Belgrade.