Mishca Barton has been acting strange on the set of her new CW drama, “The Beautiful Life.” Mischa had a rough summer, mere weeks before they were to begin taping she was carried out of her Los Angeles home and holed up in a mental ward/hospital for a week.

more Mischa after the hop…

While her rep and everyone close to her say she’s recovered and back in the saddle, Page Six had a rather disturbing insider tid bit:

A source on the set of her CW show, “The Beautiful Life,” says Barton shows up to work so bleary some days that it holds up filming. One day, says a source, “she was getting snippy with the director and kept demanding that someone make instant coffee for her. Often, she’ll stare at the coffee for minutes at a time and say, ‘Who will fix my coffee? I need someone to fix my coffee.’ “

Yikes. Sounds like either need to up those meds or take her off them completely.

Photos: Bauer Griffin