Heat the olive oil in a large, oven-safe skillet
over medium-high heat. Add onions and cook for about 2 to 3 minutes, until the onions start to soften. Add diced zucchini, peppers and a pinch of salt and cook for 3 to 4 minutes. Add chicken, beans and enchilada sauce, and stir until everything is combined. Turn off heat. Sprinkle tortilla chips on top, then sprinkle the cheese. Feel free to add more cheese or tortilla chips.