FIG. 1 is a front plan view of a LED lighting fixture showing our new design; FIG. 2 is a rear plan view thereof; FIG. 3 is a top plan view thereof; FIG. 4 is a bottom plan view thereof; FIG. 5 is a left side plan view thereof; FIG. 6 is a right side plan view thereof; FIG. 7 is first perspective view thereof; and, FIG. 8 is a second perspective view thereof.