Is this riddle similar to a guy eating albatross soup and realizing that he "accidentally" ate a friend's body while he was stranded on an island many years earlier (the current couple ate the food with the lights out and realized the taste was familiar)? No
Was anybody poisoned? no
Did anything happen in the dark that changed the normal situation into an emergency? have to answer no to this.
Did the couple secretly simultaneously poison each other during a black out? no
Were plates/bowls/dishes/glasses swapped during the meal which precipitated the people fearing they accidentally poisoned themselves? ironically, no
Were they rushing to the hospital? heh, no
Was anybody Dabney Coleman? don't know him and no
Did anybody get rat poison put in their coffee? ironically, no

Was the food they were eating alive?
Is their meal a common meal today?
Were they running away from something?
Were they running to a destination?
Were they running just in panic?
Will TW do nasty things w/ peanut butter?

Was the food they were eating alive? no
Is their meal a common meal today? yes
Were they running away from something? ehhhhhh, i'd say yes
Were they running to a destination? no
Were they running just in panic? a bit, yes
Will TW do nasty things w/ peanut butter? we can all hope not

Did a monster jump out of their food (resurrected Thanksgiving Day turkey gone mad?) and attack them?

Was something else coming to eat their food? perhaps a big scary animal?

Was it something about the meal which scared them?
Did they hear a noise which scared them?
Was anybody else present alive at the meal?
Was anybody else present dead at the meal?

Were they watching TV at the time?
Were they listening to radio at the time?
Did they hear Orson Welles broadcast of War of the Worlds and freak out?

Did a monster jump out of their food (resurrected Thanksgiving Day turkey gone mad?) and attack them?no
Was something else coming to eat their food? perhaps a big scary animal?no
Was it something about the meal which scared them? hmmmmm, ehhhh, not really.
Did they hear a noise which scared them? no
Was anybody else present alive at the meal? hmm, have to say no
Was anybody else present dead at the meal? no
Were they watching TV at the time? no
Were they listening to radio at the time? no
Did they hear Orson Welles broadcast of War of the Worlds and freak out? very good try, but no

were they running out of the house?
were they running to another room within the house?
were they dreaming?

No...put all the yes answers together and you'll make think of it.
were they running out of the house? i'll have to say no to that.
were they running to another room within the house? i'll have to say no to that.
were they dreaming? no.

Were they playing Duck Duck Goose around the dinner table?