01 - 
                Wash the chicken thighs and dry them with paper towels.
              
              
              
                02 - 
                Combine the brown sugar, ketchup, soy sauce, pineapple juice, ginger, garlic, vinegar, cumin, black pepper, and paprika in a big bowl or ziplock bag. Stir everything together.
              
              
              
                03 - 
                Take out ½ cup of the mixture and put it aside for later.
              
              
              
                04 - 
                Put the chicken in with the remaining sauce. Make sure all pieces are completely covered. Seal and stick in the fridge for 4 hours or leave overnight.
              
              
              
                05 - 
                Fire up your grill to medium-high (around 400°F) and rub some oil on the grates.
              
              
              
                06 - 
                Throw the chicken on the grill and let it cook for about 10 minutes without flipping. Then turn it over and cook another 10 minutes until it hits 165°F inside. Throw away any leftover marinade from the chicken.
              
              
              
                07 - 
                When chicken is halfway done, toss the pineapple rings on the grill. Cook until they're golden on both sides.
              
              
              
                08 - 
                Paint the saved sauce over the cooked chicken. You can also pop the chicken under the broiler for a bit or warm up the sauce in a pan to make it thicker before brushing it on.