Is there a growing body of scientists who doubt that evolution happened?
No. The consensus among scientists in many fields, and especially those who study the subject, is that contemporary evolutionary theory provides a robust, well-tested explanation for the history of life on earth and for the similarity within the diversity of existing organisms. Very few scientists doubt that evolution happened, although there is lively ongoing inquiry about the details of how it happened. Of the few scientists who criticize contemporary evolutionary theory, most do no research in the field, and so their opinions have little significance for scientists who do.