Heat the oil in a medium skillet over medium-high heat. Add the diced chicken, salt, pepper, and onion powder. Cook until the chicken is golden and cooked through.
Transfer the chicken to a plate and set aside. Lower heat to medium-low and add the butter and garlic. Sizzle for about 30 seconds, then stir in the honey, BBQ sauce, and apple cider vinegar.
Return the chicken to the skillet and stir to coat in the sauce. Keep on low heat while warming tortillas in the microwave.
Load tortillas with the saucy chicken and add your favorite toppings. Serve immediately.
Notes
Customize toppings to your preference for added flavor and texture.