The requirements of this chapter do not apply to
(1) an animal nutritionist whose activities are limited to the nutritional care of animals; animal nutritionists may use the title “nutritionist” as long as they provide nutrition services only to animals;
(2) a person who is serving as an employee of the federal government whose job title includes the term “dietitian” or “nutritionist”; or
(3) a person who is serving as a dietitian or nutritionist in the armed forces of the United States, but the exemption provided under this paragraph does not authorize the person to use the title “dietitian,” “licensed dietitian,” “nutritionist,” “licensed nutritionist,” or an occupational title using the word “dietitian” or “nutritionist” outside the scope of the person's military service.