Thanks for the query to H.C.M. Forum.
Sometimes some foods increase intestinal motility in individual person . You may be the one of them .
If your stool ( consistency ) is solid or semi solid need not to worry at all.
If your stool is loose and watery type then this is a concerning .
If loose motion
avoid food provided by your department or change food .
If stool as above mentioned ( solid ) then it may be due to overeating , so either decrease the dose of food or it will take some time and food will adjust in intestine.
However lukewarm water also help in such type of cases.