1. Chris Harrison won’t return to ‘Bachelor in Paradise,’ David Spade set to fill in (Page Six) 2. Mischa Barton accused of being a ‘nightmare’ on the set of ‘The O.C.’ (Page Six) 3. Lisa Kudrow Details the Friends Reunion Moment You Missed Between Matt LeBlanc and Courtney Cox (E!) 4. David Schwimmer shows some PDA with a mystery woman and more star snaps (Page Six) 5. Erika Jayne and Tom Girardi’s legal scandals at center of new documentary (Page Six)