Is there a conflict of interests?
Do I see selling erotica as a conflict of interests with my current stories about Christianity?
In short, No.
The crux of the matter depends on how long you have known my writing, and how you view me as a writer.
People who have known my writing for only a year or two could see me as a Christian writer.
If you have read my work for five years, you may see me as a Science Fiction writer.
To the few who have followed me since I began a decade will not be surprised to know that I see no conflict of interest here.
The reason is I see myself as a writer, no more, and as such, I write stories of many genres; I draw the line at what I class as porn, but I never denied I wrote two erotic romances.