"My best friend took me out on the town in Nashville and we ordered a few of these amazing drinks. Then... a few weeks later I had something similar in Dallas! I became obsessed with figuring out how to throw one together and this is as close as it comes to heaven in a glass with a splash of burning as it goes down!"
Combine mango-flavored rum and chopped jalapeno pepper in a large glass container. Let infuse, at least 1 hour. Strain out jalapeno pepper and discard.
Mix infused rum with orange-peach-mango juice, orange-flavored liqueur, and lime juice together in a bowl.
Fill a cocktail shaker with ice and add rum mixture, working in batches. Cover shaker and shake until outside of the cocktail shaker is frosted; pour into serving glasses. Garnish with jalapeno pepper slices.