Cats are like greys that way, some are picky and some are not. My Siamese (pure breed) will eat shoe leather if it smells like tuna and anything else. I have an alley cat who will eat only Purina One dry food. Period.
LOL Happy birthday anyway! I feel you pain. I sprout, shred and cook my little heart out too and Timber gives it the cold shoulder. When dad eats his pizza spaghetti, he is all about that!