Ratings Chart Attack!

Fox summer series “Hell’s Kitchen” turned up the heat in its April debut Tuesday, posting a series high, while lead-in “American Idol” sank to a four-year Tuesday ratings low.

“Hell’s Kitchen” ended up with a 5.7 rating/14 share, a 54% increase over last year’s June season premiere. “Idol,” on the other hand, slipped 3% week-to-week, ending with a 9.3/25, its lowest Tuesday since May 2004.

Regardless, Fox handily won the night with a 7.5/19.

NBC and CBS tied for second (2.9/7). NBC’s “The Biggest Loser” was up slightly from last week (3.3/8), as was as CBS’ “Big Brother” (2.4/6). A special “CSI: Miami” (4.1/11) improved “Jericho’s” former timeslot average by 105%.

The “Dancing With the Stars” results show was flat week-to-week (3.9/9), pushing ABC to fourth (2.6/7). Two episodes of “Just for Laughs” (1.3/4, 1.4/4) and “Live to Be 150 … Can You Do It?” (2.5/7) padded the night around “Dancing.”

The CW was flat with last week (0.7/2) with “Beauty and the Geek” (0.7/2) and “Reaper” (0.6/2).