Hi justecila! The margins of the petals - the actual edge. They roll somehat on themselves - like wave forming a tube - this will be noticeable on the back of the petals. In this case the petals do not. What you are referring to is reflexed petals - the petals in your pic are reflexed. You can however notice that the petals are somewhat involute - rolling in towards the anthers/center of the flower.
I have no doubt that this is a hybrid between frutescens and baccatum - they are known to produce fertile offspring. Enter the name of this paper (PHYLOGENETIC RELATIONSHIPS OF CAPSICUM (SOLANACEAE) USING DNA SEQUENCES FROM TWO NONCODING REGIONS: THE CHLOROPLAST atpB-rbcL SPACER REGION AND NUCLEAR waxy INTRONS Brian M. Walsh and Sara B. Hoot) into your search bar and once downloaded scroll to page 1141 (don't worry it is an excerpt from a journal so it is not 1000's of pages long!). There is a diagram that shows all the hybridisation experiments that were carried out in Capsicum. Capsicum frutescens produces viable hybrids and seeds with all subspecies of baccatum. Your plant could easily be way down the line as regards generations and is now fixed into what it is.