Evolutionary psychology is a science. It meets the requirements of being "scientific":
1) reliance on a clear ideological base (methodology); 2) the presence of its own research object; 3) having your own subject of research; 4) availability of own research methods.
Evolutionary psychology puts forward hypotheses and proves them by confirming or refuting them.
There is a conditional division into sub-branches of science and theoretical directions of science. Social, pedagogical, aviation psychology are sub-sectors, each dealing with its own problem area.
Theoretical directions - behaviorism, gestalt, cognitive psychology, evolutionary - put forward their own explanation of the structure of the object (in our case - the psyche) as a whole. Evolutionary psychology is rather a theoretical direction, since it considers the psyche from the standpoint of the formation of its properties in the evolutionary process. And from these positions can explain a number of phenomena, for example, processes of memory and thinking or cultural traditions.
If a specific answer is required, then no. Psychology is a science, and developmental psychology, social, general, pedagogical, and, accordingly, evolutionary psychology is a section, part, an offshoot of psychological science.