Q. Is it recommended that a father who is a Rabbi should be the Mesader Kissushin and officiate at the wedding of one of his children?
A. Although some Poskim do mention that there may be an issue of opening oneself to 'Ain Hora'a' (evil eye, resulting from envy), the accepted tradition is not to be concerned at all. (See Nitei Gavriel - Nissuin 19: 5).
Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller and Horav Chanoch Ehrentreu Shlit'a.