a small help please

is that in the picture bellow over watering symptom or transplanting stress?

I transplant her 10 days before with no other symptoms this problem exists only in the lower leaves all the other leaves are healthy with fast veg process
ph 6.7 /room temp 24-29 c/humidity: 52%

Nothing to worry about....Normal at this point!
Given some time they may begin to yellow and fall out as they are bottom shade leaves.

looks good to me