The "E. Oropeza" credited on the label is Earl Stanley, whose full name is Earl Stanislaus Oropeza. He doesn't consider "Pass the Hatchet" his best work, but it made him the most money by far. See this profile from New Orleans Offbeat magazine.
Composition and backing track were by Earl Stanley and the Stereos, a white New Orleans band. Eddie Bo added overdubs and vocals. Bo was one of the many great New Orleans musicians who never achieved the fame their talents deserved.