In a bowl, mix together the dill pickle juice, brown sugar, salt, black pepper, hot sauce, and cayenne pepper.
Add the chicken thighs to the marinade, ensuring they are fully coated. Cover and refrigerate for 1–4 hours.
Remove the chicken from the refrigerator and let it sit at room temperature for about 30 minutes.
Heat a grill or skillet over high heat.
Cook the chicken thighs for about 4–5 minutes per side until nicely browned and cooked through.
Ensure the internal temperature reaches 165°F for safe consumption.
Allow the chicken to rest for 5 minutes before serving.
Serve hot and enjoy the juicy, flavorful chicken.