In a large skillet, saute onion and green pepper in oil until tender. Add garlic; cook 1 minute longer. Stir in the corn, chives, cilantro, salt and pepper. Cook until heated through, about 3 minutes. Stir in eggs; cook until completely set, stirring occasionally. Remove from the heat.
Place one tortilla on a lightly greased baking sheet or pizza pan; layer with a third of the corn mixture, salsa and sour cream. Sprinkle with a fourth of the cheeses. Repeat layers twice. Top with the remaining tortilla and cheeses.
Bake at 350° for 10 minutes or until the cheese is melted. Cut into wedges. Serve with salsa and sour cream if desired. Yield: 6-8 servings.