Chicken Fajitas with Mexican Ranchero Sauce

Name: Chicken Fajitas with Mexican Ranchero Sauce
Ingredients: 1 cup mayonnaise; 1 cup sour cream; 2 1/2 tablespoons dry ranch dressing mix spice packet (about half of the packet); 2 cloves minced; 1 tablespoon lime juice; 1 tablespoon cumin; 1 tablespoon chili powder; 2 tablespoons lime juice; 2 tablespoons taco seasoning; 1 teaspoon red chili flakes, optional; kosher salt and fresh cracked pepper, to taste; 1/2 cup extra virgin olive oil, plus 1 tablespoon for skillet; 2 pounds chicken breasts ((about three large breasts)); 3 bell peppers (combo of red, green, and orange or yellow, seeded and sliced into thin strips); 1 medium yellow onion, sliced into strips; 3 cloves garlic, minced; 2 tablespoons cilantro, diced (for garnish); 2 limes, sliced (for garnish); 12 tortillas (either corn or flour, for serving)