The ornamental design for a cookingpot handle, as shown and described.
FIG. 1 is a perspective front view of a cooking pot handle;
FIG. 2 is a front elevation view of the cooking pot handle;
FIG. 3 is a rear elevation view of the cooking pot handle;
FIG. 4 is a left side elevation view of the cooking pot handle; the right side view being a mirror image thereof;
FIG. 5 is a top plan view of the cooking pot handle; and,
FIG. 6 is a bottom plan view of the cooking pot handle.
The cooking pot and connection to the cooking pot handle are shown in broken lines for illustrative purposes only and form no part of the claimed design.