Self-employed health insurance has to be paid by you, not by the Marketplace. You can't have a deduction for the expense the Marketplace is paying for and then claim the credit as well.
The blue "Learn More" next to the SE question in the 1095-A screen states:
If you reported self-employment income on any of the schedules listed below and you used that income to buy health insurance through Healthcare.gov or your state Marketplace, you can deduct your premiums on your taxes. However, you need to tie that income to your 1095-A so we can properly calculate the deduction amount.
