Preheat the broiler.
In a nonstick skillet over medium-high heat, sautÃ© the chicken until cooked through, about 5 minutes. Season with the chili powder and salt.
Lay the pita chips on a large baking sheet. Evenly top with chicken, mango, bell pepper, and cheese. Place under the broiler until the cheese is melted, about 3 to 5 minutes.
Remove from the oven and top with avocado, cilantro, lime, and a pinch of salt. Serve.
Nutritional analysis per 1-cup serving: Calories 570; Protein 49 g; Carbohydrates 30 g; Fat 28 g; 44% Calories from Fat; Cholesterol 150 mg; Sodium 854 mg; Potassium 779 mg; Fiber 4 g