The former Gunners forward believes it is time to give the England man a chance to realise his potential in a central berth.
Walcott spent the majority of last season on the treatment table as he recovered from an injury suffered the season before, but returned strongly at the end of the campaign.
He did, however, start the FA Cup final against Aston Villa in the lone striker role ahead of Olivier Giroud, scoring the opening goal with a well-timed volley past Shay Given, and Hartson says it is time Wenger used him in that position more frequently.
“Theo Walcott must be give the chance to shine as a lone striker at Arsenal,” argues Hartson.
“Some fans are asking can he really produce 25 goals a season. Well I believe next season he should be given the chance to prove he can. He may not have the physical attributes of some strikers, but he has the intelligence, movement and ability to break through any defence.”
The question over Walcott’s best position has been a long running one, with many advocating him for that striker role.
He has, however, spent the majority of his career as a winger, likely because of his blistering pace. He has, though, at times, excelled up front, giving credence to those who believe he should be used in the position more often.
When he first joined the Gunners he was seen as the future of the club, but Hartson argues now is the time for him to realise that potential.
“For years people have been saying Theo is the future. Well the future is now,” he adds.
“Arsene should give him the chance to prove he can do the job up front on his own. It may seem that sometimes he needs three chances to score one but with the service he will get from Wilshere and Ramsey next season he will score goals – and a lot of them.”