The man leaves the restaurant in the 32700 block of South Fraser Way in Abbotsford after receiving his takeout order for a soup and sandwich on Sunday afternoon, but he returns shortly afterwards.
He isn't happy with the lettuce and tomatoes on his sandwich.
He becomes increasingly heated about the issue as he explains the problem to restaurant staff.
One of the workers, a woman in her 40s, shifts him away from the other customers and tries to get him to calm down.
The man's anger grows and he suddenly throws his hot soup at the employee, striking her in the face and chest.
The man then storms out of the restaurant and drives away, but not before a quick-thinking witness notes the licence plate on his vehicle.
Police are called to the scene, and they determine that the shaken worker has suffered minor burns to her chest, neck and face but does not require treatment.
Meanwhile, other officers are dispatched to the home of the registered owner of the vehicle that the angry customer drove away in.
A 42-year-old man is arrested at the residence and now faces a charge of assault with a weapon.
Abbotsford Police Const. Ian MacDonald said the man, who cannot be named until charges are formally laid, has prior convictions for assault with a weapon, breaking and entering, and theft.