The Albanian lëkurë means ‘skin, bark’. The German Leder means ‘leather’.
Consulting Vladimir Orel’s Albanian Etymological Dictionary:
lëkurë ‘skin, bark’ < *lauk-urā
lakur ‘naked’ < *lauk-ura
In both cases, *lauk– is derived from Indo-European *leuk̂- ‘to shine, to be white’.
German Leder, English leather < Reconstruction:Proto-Germanic/leþrą < Proto-Indo-European *létrom ‘leather’. From The Oxford Introduction to Proto-Indo-European and the Proto-Indo-European World, it appears *létrom is a word specific to Celtic and Germanic.
So, doesn’t look like it.