Season the chicken with salt and place in a ziploc bag.
Make the marination by blending balsamic vinegar, mustard, honey, garlic, salt, Italian seasoning, and slowly adding oil until desired thickness is reached.
Marinate the chicken for 12-24 hours, or a minimum of 1 hour if rushed.
Drain the chicken from the marination before grilling.
Grill the chicken on both sides until charred and internal temperature reaches 175°F for thighs, approximately 5-8 minutes per side.
Let the chicken rest for 5 minutes before serving.
