New York radio commentator Jean Shepherd predicted embarrassment for Premier Nikita Krushchev in a talk last night in Colton Chapel at Lafayette College. Shepherd pointed out that the recent U. S. plane incident and the increase in East-West tension might in the end cause embarrassment for Krushchev. He said Krushchev now knows we have been flying over Russia for some time and his claims about military and scientific power might look a little shoddy in the light of fact.