MrCrispyanswered grow question 3 years ago Looking great to me. Cannabis is over-bred and so has some interesting mutations that can appear and stay or vanish with only one weird leaf.
Variegation (whitish swirls usually) shows up about 1:25 for me. Your plant may show 'Polyploidy' since this shows up more when plants are young.
Has to do with mixed up instructions on how to grow a proper leaf. Leaves that form with even numbered fingers vs odd, are also usually from this cause. Those I see all the time even on big plants.
Nothing really to be done about it, IMHO. If it keeps throwing crinkle leaves, and slows in growth, oddball nutrient problems may be at fault, but you cant tell so early by shape alone.