The former England U-21 has joined Gareth Southgate's club on a three year contract.
Newcastle, Burnley and West Brom, as well as the Foxes, were all interested in securing the 24-year-olds signature after his release from Reading in May.
Lita appeared to be a perfect answer to the Foxes limited attacking options. However, Pearson, no doubt, will still be looking for further additions to a decent squad before Saturday's Championship opener, at home to Swansea City.