The ornamental design for a kitchencounter, as shown and described.
FIG. 1 is a front, top, and right side perspective view of a kitchen counter, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a right side elevational view thereof; and,
FIG. 7 is a left side elevational view thereof.
The broken lines shown are included for the purpose of illustrating the environment in which the article resides and form no part of the claimed design.