Leicester caretaker manager Nigel Worthington's spell in charge of the club began with a defeat at the hands of his former club Norwich.
Darren Kenton had put the home side ahead after 40 seconds when he fired an angled drive into the far corner.
But Canaries striker Robert Earnshaw came on as a substitute after four months out and equalised from the spot after a Patrick Kisnorbo handball.
Gareth McAuley then scored an own goal and Leicester failed to recover.
Leicester boss Nigel Worthington:
"We made a great start and we were doing everything we had spoken about in the week.
"We had tempo and sharpness but it was always going to be difficult to maintain that level.
"The challenge now is to take the first-half performance into the remaining four games."
Norwich manager Peter Grant:
"We made a poor start and I think that epitomised us for the whole of the first half.
"I was glad to get to half-time at 1-0 because I didn't think Leicester made
the most of the chances we let them have.
"But in the second half we played some good football and perhaps deserved to
win by more.
"I have been critical of them many times but they were terrific here and
deserve the credit for their performance."
Leicester: Logan, Kenton (Stearman 38), McAuley (Mattock 78), Kisnorbo, Johansson, Newton, Jarrett, Wesolowski, Porter, Hume, Fryatt (Horsfield 65).
Subs Not Used: Henderson, Hammond.
Goals: Kenton 1.
Norwich: Warner, Colin, Shackell, Dublin, Drury (Eagle 2), Croft (Renton 90), Hughes, Spillane (Earnshaw 70), Etuhu, Huckerby, Martin.
Subs Not Used: Gallacher, Cave-Brown.
Goals: Earnshaw 74 pen, McAuley 78 og.
Ref: C Webster (Tyne & Wear).