Sequence length distribution after adapter trimming using trimmomatic

Question

[GK1610]

I have a chipseq library with sequence distribution of mean 150 from fastqc. After adaptor trimming, the distribution became from 35-149. quite wide.

I am getting acceptable NSC but RSC < 0.1, quality tag < 0 from Phantompeakqualtools tools. My guess is it is coming from varying fragment distribution.

Is there any way I can save this library?