As he hurled his shoes, Zaidi shouted at Mr Bush: "This is a goodbye kiss, you dog... from the widows, the orphans and those who were killed in Iraq."
He was convicted of assaulting a foreign leader, and served nine months of a 12-month prison sentence.
After his release in September, he said he was tortured while in jail.
At his appearance in Paris, organised by the Arab Press Club, he said he was receiving medical treatment in Geneva for broken teeth, fractures and other injuries he sustained.
Asked about the sums of money and even offers of marriage that he is said to have received, Zaidi said he told his family to refuse all gifts "until I find a way that they can be passed on to the people of Iraq", AP quoted him as saying.
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