Mix together sea salt, minced onion, roasted garlic powder, black pepper, coriander, parsley, and paprika.
Put the spice mixture, olive oil, and vinegar into a gallon sized ziptop bag. Add two pounds of boneless, skinless, chicken breasts. Toss to coat well, place in the fridge and marinate the chicken for 30 minutes.
Grease the grill grates, discard the marinade and grill the chicken over medium high heat for about 5 minutes per side for a total of about 10 minutes or until chicken reaches an internal temperature of 160°F.