Melt 5 Tbsp butter in heavy saucepan oover medium heat. Saute onion till translucent.Stir in flour, and whisk to make a paste. Add the milk, salt, and red pepper. whisk till smooth and thickened. Stir in velveeta till melted. Take a little of the mixture and tempur the eggs, then add eggs to pan mix well, but not boil. Add the remaining butter.
To assemble, place bread on ovenproof plate. Layer chicken or turkey, Cover with sauce, top with tomato slices, bacon strip. Sprinkle with parmesan cheese and paprika.Place under the broiler until sauce starts to bubble.