Fox served up some promising numbers Monday night for “Hell’s Kitchen,” the first of a flurry of unscripted series to bow on the broadcast nets over the next few weeks.

Show, a culinary boot camp that features a group of aspiring restaurateurs opening a top-class eatery overseen by terrifying chef Gordon Ramsay, averaged a solid 3.2 rating/8 share in adults 18-49 and 6.6 million viewers overall in the 9 o’clock hour, according to Nielsen prelims. It built on its lead-in from a repeat “Nanny 911” (prelim 2.3/7 in 18-49, 6.1 million) and also grew on the half-hour.

“Kitchen” finished 1 share behind CBS comedy repeats in 18-49 and won the timeslot in adults 18-34 (3.1/9) and teens (2.1/8). It fared best among women 18-34 (3.7/11).

It’s a busy June for series premieres on the nets, with other upcoming entries including tonight’s “Beauty and the Geek” on the WB and “Dancing With the Stars” on ABC, Thursday’s “Hit Me Baby One More Time” on NBC and Monday’s “The Scholar” on ABC — all unscripted skeins.

Fox crime drama “The Inside,” bowing June 8, is one of the few firstrun scripted programs to air on the broadcast webs this summer.