CATHERINE Zeta-Jones and Aaron Eckhart let a Bronx teen have his cake and eat it, too. The stars – who play rival chefs in the upcoming movie “No Reservations” – presented Matthew Finkel, who graduated from Lehman HS last year and worked part-time at Coals pizzeria on Eastchester Road, with a $100,000 Culinary Institute of America Scholarship during the Food Network Awards show, which airs tonight at 9 p.m. Along with the moolah, Finkel also got a two-foot-wide metallic wedge of cake that commemorated the occasion.