Slice chicken into thin strips and toss with 3 tbsp olive oil, juice from half lime, and 2 tbsp Fajita Seasoning. Refrigerate if ahead.
Slice bell peppers into 2-inch strips and red onion thinly. Prepare sauce by mixing yogurt, sour cream, remaining Fajita Seasoning, lime juice, and zest. Refrigerate.
Cook chicken in a skillet until browned and cooked through, then set aside. Cook peppers and onions until tender, then combine with chicken.
Assemble wraps by placing cheese, chicken mixture, and sauce on tortillas, then roll tightly.
Brown wraps in a skillet until golden on all sides. Slice in half and serve warm.
Notes
For extra flavor, marinate the chicken longer or add your favorite toppings.