I don't see a conflict between prolife views and supporting the death penalty because the difference imo is abortion is the powerful ending life due to inconvenience of the helpless and innocent and the death penalty is a consequence to choices the person made themselves.

Abortion ends life without cause.
The death penalty is a way of protecting society from violently dangerous people who take innocent life themselves.

To force society, and the families of the victims, to pay to care for them for life is cruelty and injustice.

Human life is equal in value.

Each person faces the consequences of their own choices. The death penalty is the last resort for people who choose to be so depraved and destructive they cannot live freely.

They devalued their own life.
Someone else did not do it to them.