There isn't much fast food on 2nd Street, but there is this Jack in the Box at the corner of Covina Avenue. It keeps the latest hours in the 2nd Street neighborhood on weekends.
Specials are frequent, as is the norm with national fast food chains, in addition to the value menu with $1 items. Of all the large fast food restaurants, Jack in the Box has one of the widest varieties of menu choices.
Inside, it is fairly sizable with plenty of seating. Parking is also a premium here, given the usual lack of it within close proximity to one's destination without an unlikely stroke of luck and good timing.