In A Large Skillet, Saute Peppers In 1-1/2 Teaspoons Oil For 3 Minutes Or Until Crisp-Tender; Transfer To A Small Bowl. In The Same Skillet, Saute The Beans, Garlic, Oregano And Cumin In Remaining Oil For 3 Minutes Or Until Heated Through. Meanwhile, Combine The Chicken, Lime Juice, Salt And Pepper. In A Greased 13-In. X 9-In. Baking Dish, Layer Half Of The Tortilla Chips, Pepper Mixture, Bean Mixture, Chicken, Cheese, Onions And Cilantro. Repeat Layers. Bake, Uncovered, At 350