Pediatric Feeding Disorder, a common problem in children, is commoner in children with various developmental disorders. Children with pediatric feeding disorder can have food selectivity and lack dietary diversity (DD). In this paper, an understanding of DD in these children is provided along with a dietary diversity index that can be helpful in measuring and understanding the risks posed by this lack of DD. An overview of a management strategy to address decreased DD is proposed. In these children, improving DD can improve growth, micronutrient status, long-term metabolic health, and potentially quality of life.