 Shares of Jack in the Box Inc. JACK, -1.36 slipped 0.6 in premarket trading Wednesday, after the fast-food burger chain reported second-quarter profit that missed expectations but revenue and same-store sales that beat, as traffic declines were partially offset by a higher average check, due mostly to higher pricing. Net income fell to 22.9 million, or 1.08 a share, from 40.0 million, or 1.79 a share, in the year-ago period. 