"As a way of celebrating the cup run and saying thank you to the club, players and fans, we worked with The FA to create this hot and fiery pie that reflects Will Grigg's performances in the competition".
Latics host the Premier League strugglers knowing they are only 90 minutes away from a third Wembley semi-final in the space of six seasons.
This is only the fourth ever meeting between Wigan and Southampton and the second in the FA Cup - the Saints won 3-0 in a fourth round match in January 1986, with current Wigan boss Paul Cook playing for the club that day.
"In the short time I've been with them I have seen good quality, good application and a group of players who have maybe been a little bit hurt by criticism", Hughes said.
Dusan Tadic's corner was stabbed goalwards by Hojbjerg and Wigan's Dan Burn couldn't react quick enough to clear off the line.
Pierre Emile Hojbjerg put the visitors ahead just after the hour to put the skids under Wigan's fairytale FA Cup run.
Gabbiadini had the chance to make it 2-0 from the penalty spot with just under 20 minutes remaining, but Walton saved his spot kick. Nathan has been very positive: "I've had a good insight already".
"The work we've done since I've come in and the positivity of this result will help us moving forward".
Nathan Byrne linked up with Will Grigg after 14 minutes but the Northern Ireland worldwide dragged his shot wide from close range.
Gary Roberts also lofted a shot over from 10 yards and the misses proved costly after the restart, with Walton keeping his side in the tie after a Byrne back pass played Gabbiadini clean in on the Wigan goal after 57 minutes.
Manager Paul Cook said: "It is a hard one when the prize is so great for a club like ours".
Wigan (4-2-3-1) Walton; Byrne (Hunt 80), Dunkley, Burn, Elder; Power, Morsy; Massey (Powell 65), Roberts (Colclough 65), Jacobs; Grigg. Goals: Hojbjerg 62, Soares 90.