In a medium bowl, whisk together the olive oil, soy sauce, and brown sugar until the sugar is fully dissolved. This creates an emulsified base that will coat the chicken evenly. The brown sugar adds depth and helps caramelize the exterior when cooked.

Add the minced garlic, lemon zest, parsley, thyme, smoked paprika, ground ginger, salt, and black pepper to the marinade base. Stir well to combine, making sure all the spices are evenly distributed throughout the liquid. I like to add the fresh herbs and garlic at this point rather than earlier—they retain their bright flavor better when they don't steep too long in the acidic soy sauce.

Pat the chicken thighs dry with paper towels, then place them in a gallon-sized zip-top bag or shallow dish. Pour the marinade from Step 2 over the chicken, making sure each piece is well coated. Seal and refrigerate for at least 1 hour, but ideally 4 to 24 hours—the longer marinating time allows the flavors to penetrate deeper into the meat. I find that even 4 hours makes a noticeable difference in flavor compared to a quick 1-hour marinade.

Remove the chicken thighs from the marinade 15 minutes before cooking to bring them closer to room temperature, which ensures even cooking. Reserve the marinade if you'd like to use it as a glaze. Cook the chicken using your preferred method—pan-searing over medium-high heat for 6-7 minutes per side, roasting at 425°F for 25-30 minutes, or grilling over medium heat for 8-10 minutes per side until the internal temperature reaches 165°F.