In A Skillet, Saute The Red Pepper And Onion In Oil Until Tender. In A Bowl, Beat Eggs And Milk. Stir In Chicken If Desired, 1/2 Cup Spinach, Mozzarella And Parmesan Cheeses, Salt And Pepper (Save Remaining Spinach For Another Use). Add To The Skillet. Cover And Cook Over Medium Heat For 7-10 Minutes Or Until Completely Set. Cut Into Wedges.