Preheat oven to 350 degrees F.
Place tortillas in a pie plate with 1 cup broth. Turn once in awhile to ensure all tortillas are soaked, set aside.
Place a large nonstick skillet over medium-high heat and add olive oil. Saute onions, peppers, garlic and mushrooms for 5 minutes until slightly browned. Add turkey and cook until turkey is cooked through, about 7 to 9 minutes. Add remaining 1/4 cup chicken stock and remaining ingredients, except cheese and tortilla chips. Stir thoroughly and bring to a boil. Reduce heat and simmer for 5 minutes.
Place 4 soaked tortillas in the bottom of prepared baking dish, tearing to fit. Layer half of turkey mixture and half of cheese. Repeat layers. Top with crushed tortilla chips. Place in oven and bake for 30 minutes.
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