Which is the worst Goosebumps book of these?

Which book is the worst?

Chicken Chicken

Monster Blood IV

Legend of the Lost Legend

Attack of the Jack-O'-Lanterns

A Shocker on Shock Street

Egg Monsters from Mars

The Abominable Snowman of Pasadena

Deep Trouble II

Revenge of the Lawn Gnomes

Say Cheese and Die--Again!

My Best Friend Is Invisible

My Hairiest Adventure

The Horror at Camp Jellyjam