it's fine. you have a nice little indica bush there and the damn thing has such fat leaves that the 1st and second set of true leaves is not getting enough light. generally the 1st and second set of true leaves have fewer leaves(1,3,or 5 instead of 7 or 9) and die earlier.
think of leaves as a power plant. the first set of seedling leaves is a crude power plant that powers the development of the 1 set of true leaves. the 1st set of true leaves powers the 2nd true set and the 2nd true set powers the 3rd and the 3rd indicates the end of the seedling stage and the beginning of the vegetative stage. its not uncommon to see the 1st and 2nd set of true leaves die shortly thereafter.
when you get toward the end of the flowering stage a lot of the fan leaves, starting at the bottom, will start to turn yellow and die. this is normal, it signifies that the end is near and in 2-3 weeks you will harvest.