The 'Kings of Queens' actress, who quit Scientology last year, has been given 12 half-an-hour episode slots by TLC for her untitled program, which began filming today.
Nancy Daniels, TLC's manager, said: "Leah is a no-nonsense, hard-working, relatable mum, wife, daughter, and sister. Her sharp humour and unfiltered family are a perfect match for the network."
The 43-year-old star will be joined by her husband Angelo - whom she has been married to for 10 years - and their feisty nine-year-old daughter Sofia, who "isn't afraid to keep her parents in check."
The cameras will also capture Leah's opinionated mother, Vicky Marshall, unconventional father, George Remini, and her sister Nicole, who all talk in a secret coded language.
There will also be cameo appearances from Leah's housekeeper and personal assistant, and Sofia's impatient British nanny.
Meanwhile, the brunette beauty hit the headlines last year after she dumped her religious organisation following years of abuse for questioning the actions of the Church leader, David Miscavige.
However, Leah is determined to ensure people see her for who she really is, rather than be known as a "bitter ex-Scientologist".
She told Buzzfeed last week: "I don't want to be known as this bitter, ex-Scientologist."
