Kourtney Kardashian is the queen of wellness, so it only makes sense she’d be front and center in a fight over her town at a Calabasas Landfill protest.

The reality star walked the talk, joining fellow locals Thursday — including Kendra Wilkinson — to fight against dumping debris from January’s Palisades fires in a landfill just outside city limits.

They made their opinions loud and clear, protesting the hazardous waste and toxic ash deposited in a nearby disposal site, which poses an ongoing health threat to residents … and it’s dangerously close to an elementary school.

Kourtney and company were out with powerful signs like “Don’t Poison My Playground!” and “Calabasas Is Not an Ashtray,” as tension reached a boiling point. Sheriff’s deputies were on the scene, and one man was even arrested.

This all came after L.A. County Superior Court Judge Stephen Goorvitch denied a request for a temporary restraining order that would’ve stopped ash from being dumped in Calabasas.