The ornamental design for a chewabletoothpick, as shown and described.
FIG. 1 is a front perspective view of a chewable tooth pick showing my new design;
FIG. 2 is a top side plan view thereof;
FIG. 3 is a bottom side plan view thereof;
FIG. 4 is a right side elevation view thereof, with the left side elevational view being identical thereto; and,
FIG. 5 is a front side elevational view thereof, with the back side elevational view being identical thereto.
The evenly spaced broken lines are for the purpose of showing portions of the chewable tooth pick and form no part of the claimed design. The dash-dot lines in the figures are for the purpose of showing boundaries of the design and form no part of the claimed design.