“Jawbreaker” (1999) shares a resemblance with “Heathers” and possesses some enjoyable moments, though it doesn’t quite manage to be truly captivating. The story centers on three high school friends—played by Rose McGowan, Rebecca Gayheart, and Julie Benz—who attempt to conceal an accidental death following a prank involving a classmate (Charlotte Ayanna). Their scheme requires them to include a quiet, less popular…