The Swansea boxer's chance comes at Bethnal Green's York Hall on Saturday, 24 February.
Harris' father Peter was a British champion and Harris, who trains with Gary Lockett, is looking to follow in his footsteps.
"To be fighting for a title in just my 10th fight is huge for me," he said.
"I'm determined to become the Commonwealth champion."
Find out how to get into boxing with our special guide.

The victim, in his 60s, had been karting at the Ellough Park circuit in Suffolk on Sunday afternoon.
Ambulance crews found the man unconscious and not breathing when they arrived at the track near Beccles and treated him at the scene but he died there.
Suffolk Police have started an investigation into the death, working with Waveney District Council.
More updates on this news story and other stories in Suffolk
A spokesperson for the council said: "As part of our responsibility for health and safety issues, our Environmental Protection team are working with Suffolk Police regarding this incident to establish the course of events."

The £80,000 needed for a monument to Alice Hawkins was given in one donation from a city businessman.
Ms Hawkins, a shoe machinist, helped lead the Suffragette campaign in Leicester and gave speeches in London.
Her grandson said the statue would be in recognition of all the women who fought for universal suffrage.
The anonymous donor had originally pledged some of the funds needed for the artwork but was moved to donate the full amount after watching the film Suffragette.
Ms Hawkins' grandson, Peter Barratt, said the donor had "made dreams and ambitions come true".
"The statue will feature Alice but it is in recognition of all the women in the Leicester Suffragette movement 100 years ago, to gain a basic human right that that we all have today."
Ms Hawkins left school in Stafford in 1876 to start work as a shoe machinist, later joining Equity Shoes, which encouraged workers to take part in political activism.
From there she joined the Women's Social and Political Union (WSPU) and was one of 18 women to be jailed when they were charged by mounted police in Hyde Park in February 1907.
After her time in prison, she organised meetings and protests in Leicester, inviting Sylvia Pankhurst and helping form the city's section of the WSPU.
She died in 1946, aged 83, and was buried in an unmarked pauper's grave.
Mr Barratt said he was now inviting ideas from artists for the statue and hoped it would be put up in about 18 months' time.

The former international moved to Linfield last summer but he had limited game time at Windsor Park because of injury and was eventually released.
Clingan's cross-channel career included spells at Norwich City, Coventry City, Nottingham Forest and Kilmarnock.
The midfielder, who won 39 Northern Ireland caps, lined out for Glenavon in a pre-season friendly against Loughgall on Saturday.
Glenavon open their Irish Premiership campaign with a contest away to Warrenpoint Town on Saturday.
Welsh boxer Jay Harris will challenge Thomas Essomba for the Commonwealth flyweight title in just his 10th professional fight.
[NEXT_CONCEPT]
A man has died after apparently being thrown from a go-kart at a track.
[NEXT_CONCEPT]
A statute to a Leicester woman, jailed five times for her part in the Suffragette movement, will be built after an anonymous donor came forward.
[NEXT_CONCEPT]
Glenavon have signed ex-Northern Ireland midfielder Sammy Clingan.