For an extra layer of flavor, try grilling the chicken thighs instead of pan-frying. Marinate the chicken in the bulgogi sauce for at least 30 minutes before cooking. Feel free to customize the toppings! Add a sprinkle of sesame seeds, a dollop of kimchi, or a drizzle of sesame oil for an even more authentic Korean flavor. If you don't have Persian cucumbers, English cucumbers will work just as well. Be sure to slice them thinly. Adjust the amount of sriracha in the crema to suit your spice preference. You can also use another hot sauce if you prefer. To warm the tortillas, you can use a dry skillet, a microwave, or a gas stovetop flame.