yes its normal, those early leaves are just starters and will pretty much always die and fall off.
it all depends on your approach.
i am limited on vertical height.
so i use selective pruning methods to decrease vertical growth while reinforcing horizontal growth.
its a rough balance to make.
untill the leaf is literally dead, its still helping the plant.
but wether you pluck it or wait for it to fall off naturally, do not leave it in the pot.
its a severe mold mildew factor. (becuase its dead and on the soil shade plus low airflow and moisture can give fungals just the foothold they need to get started)
but what do i know.
if i know anything, id be dead by now.