PARKS AND RECREATION: While researching local bands, the “Parks” crew learns something very surprising about Ron Swanson. (Jordin Althaus/NBC)

RETURNING SHOW: Gordon Ramsay’s “Hell’s Kitchen” (Fox at 8 p.m.) is back for a 12th season, and he’s full of rage and spite. In the opener, Ramsay divides the 20 new chefs into two teams and their first challenge is to prepare their signature dish, with the reward being an exclusive dinner with the famed chef himself.

On “The Big Bang Theory” (CBS at 8), Howard and Sheldon brave a turbulent plane ride for a tour of NASA headquarters in Houston, where they also have to visit Sheldon’s mother.

Unfortuantely it’s Leslie’s job to create a new town slogan on “Parks and Recreation” (NBC at 8:30); meanwhile, the crew learns something surprising about Ron while scouting bands to play the Unity Concert.

Harry Connick Jr. and Mali Music perform on “American Idol” (Fox at 9) before a contestant is booted from the show.

A baby is found outside the hospital and a doctor is suspended on “Grey’s Anatomy” (ABC at 9), while Arizona advises a patient facing a double amputation.

“Hollywood Game Night” (NBC at 9) hosts players Mark-Paul Gosselaar, Taraji P. Henson, Breckin Meyer, Alison Sweeney, Angela Kinsey and Fred Willard.

SERIES PREMIERE: The docu-series “Breaking Boston” (A&E at 10) follows a group of four, young blue-collar women trying to break the cycle of their peers in a town where education, employment and opportunities are hard to come by. In the premiere, a single mom pursues a beauty school education.

Fitz thinks he’s prepared for the upcoming presidential debate on “Scandal” (ABC at 10), but a surprise awaits.

Anita Hill, the Brandeis University professor and subject of the documentary “Anita,” is on “The Daily Show With Jon Stewart” (Comedy Central at 11).

Actors Julianna Margulies and Patton Oswalt swing by “The Tonight Show Starring Jimmy Fallon” (NBC at 11:35), with stand-up from Nate Bargatze.

Actors Bryan Cranston and Melissa Rauch from “The Big Bang Theory” are on the “Late Show With David Letterman” (CBS at 11:35), along with a performance from Le1f.

Pop star Lady Gaga and “Scandal” actress Darby Stanchfield sit down on “Jimmy Kimmel Live” (ABC at 11:35), with music from the Preatures. Also, Johnny Winter sits in with the house band.

— Rachel Lubitz