Her new boyfriend Alex Reid quickly put his protective arm around Katie as the furious blonde ambushed her at 4am in the Brighton take away.
The unidentified woman was later removed from the shop by security.
Katie appeared to be unshaken by the incident, but it is yet another example of her public profile taking a battering since her separation from Peter Andre in May.
Public enemy: Katie Price and Alex Reid look across as the furious woman hurls abuse and displays a sign saying: 'You are a s**g'
Let me handle this: Alex puts his strong arm up to block the woman as she tries to give the former glamour model a piece of her mind
But despite cagefighter Alex's heroics in the kebab shop, Katie is said to be angry over his appearance in upcoming gangster film Killer Bitch.
The film shows a semi-naked Alex in an unsavoury sex scene with co-star Yvette Rowland, and also features him strangling the leading lady.
It is likely to appall Katie who is desperate to promote a family-friendly image as she battles it out with Peter over custody of their children.
Killer Bitch, shot in the woods of Capel, Surrey, is described as a 'fictional full-length feature movie with real fights, real criminals and real sex'.
Unsavoury: Alex and Yvette Rowland on the set of Killer Bitch
The plot focuses on a woman played by former children's TV actress Yvette, who takes part in a deadly game in which she has to kill five people, or all her friends and family will be murdered.
Sources close to the film said Katie made life difficult for Alex during filming by calling him constantly.
Katie's advisors have become increasingly concerned about the former glamour model's 'battered profile' and have ordered the 31-year-old to stay away from alcohol.
But, judging by the latest images of her to emerge, the model appears to be taking little heed of the advice.
Distasteful: In another scene the cagefighter strangles the leading lady
She looked rather unglamorous stumbling out of a kebab shop with Alex after partying until the early hours of the morning.
Dressed in a black and gold dress and stilettos, she tucked into chips and a greasy kebab to the amusement of onlookers.
Katie, 31, is about to go on her third Mediterranean trip in three months and has been advised to keep a low profile after she was criticised for her wild behaviour on her last two holidays.
The mother of three was seen flashing her breasts in a nightclub and kissing a male model during a holiday to Ibiza in June and was pictured frolicking on a balcony with her cage fighter boyfriend during a break in Marbella earlier this month.
Late night munchies: After the incident, Katie tucks into some greasy food after a night out in Brighton with cagefighter Alex
Her image took a battering on those two occasions and her people are desperate for this not to happen again,' a source is quoted as telling The Sun.
'The majority of her indiscretions arise as a result of her drinking.
'She readily admits that she becomes a different person when she drinks and she tends to lose control.'
Katie is due to fly to Marbella again tomorrow for the European launch of her equestrian range and her publicity team are said to be adamant that she remains tee-total.
'Her people want nothing to detract from the range – and if she’s not drinking, then they’re on much safer ground.
'When it comes to her business Katie is a true professional so she wouldn’t want to be partying hard anyway.'
Katie has been playing the doting mother in recent weeks and was recently pictured putting on an affectionate show with seven-year-old son Harvey last week during a day out Thorpe Park in Surrey.
Her two other children Junior, four, and two-year-old Princess Tiaamii spent the day with their father, Katie's estranged husband Peter Andre.
She recently insisted that her relationship with Reid is not a publicity stunt.
Speaking to OK! magazine, she said: 'I'm really happy with Alex. He's absolutely gorgeous.
'It's serious. Pete's the one who broke up with me and it's good I'm moving on.'
