Nowhere ... a single member LLC that reports the income on a Sch E is a disregarded entity ... look at the Sch E ... there is only room for your SS# or ITIN unlike a Sch C where you can enter both the SS# & EIN.
When you applied for the LLC's EIN you linked your SS# to it so that is how the IRS connects them on the tax return.
https://www.irs.gov/pub/irs-pdf/f1040se.pdf
