Combine all marinade ingredients in a gallon-sized ziplock bag and add the boneless chicken thighs. Marinate in the refrigerator for 4-8 hours.
Preheat the grill to medium-high heat (between 400-450 degrees F).
Grill chicken thighs for approximately 6-7 minutes per side, or until the internal temperature in the thickest part of the thigh reaches 165 degrees F.
Remove chicken thighs from the grill, transfer them to a plate or serving tray, cover lightly with foil, and let them rest for 10 minutes before serving.
Serve the delicious, juicy grilled chicken thighs to your family or guests.