FIG. 1 is a front side perspective view of a front chain wheel in accordance with my new design; FIG. 2 is a front side elevational view of the front chain wheel illustrated in FIG. 1; FIG. 3 is a top plan view of the front chain wheel illustrated in FIGS. 1 and 2; FIG. 4 is a rear elevational view of the front chain wheel illustrated in FIGS. 1-3; FIG. 5 is a bottom plan view of the front chain wheel illustrated in FIGS. 1-4; FIG. 6 is a left side end elevational view of the front chain wheel illustrated in FIGS. 1-5; and, FIG. 7 is a right side end elevational view of the front chain wheel illustrated in FIGS. 1-6.