The ornamental design for the food packaging, as shown and described.
FIG. 1 is a front, upper left perspective view of the food packaging;
FIG. 2 is a plan view of the top panel, front side panel, rear side panel, left side panel, and right side panel thereof laid out in a flattened state;
FIG. 3 is a top view of the top panel thereof;
FIG. 4 is a front view of the front side panel thereof;
FIG. 5 is a left side view of the left side panel thereof;
FIG. 6 is a right side view of the right side panel thereof; and,
FIG. 7 is a rear view of the rear side panel thereof.
Other views of the food packaging form no part of the claimed design.