Step 1

Combine brown sugar, oil, vinegar, mustard, lime juice, lemon juice, garlic, seasoned salt, and pepper in a medium bowl and mix well.

Step 2

Place chicken in a glass or ceramic bowl and cover with sauce. Cover the bowl with plastic wrap and marinate in the refrigerator, 8 hours or overnight.

Step 3

Preheat an outdoor grill for medium heat and lightly oil the grate.

Step 4

Remove chicken from the marinade and shake off excess. Discard the remaining marinade.

Step 5

Cook chicken on the preheated grill until chicken is no longer pink in the center and the juices run clear, 8 to 10 minutes per side. An instant-read thermometer inserted into the center should read at least 165 degrees F (74 degrees C).