In a medium bowl, whisk together reduced sodium soy sauce, minced garlic, grated ginger, brown sugar, fish sauce, and yellow curry powder.
Place the chicken chunks in a large resealable bag or bowl. Pour the marinade over the chicken, massage it in, and refrigerate for at least 2 hours or overnight, turning occasionally.
Remove the chicken from the marinade and discard the excess liquid. Preheat your grill or cast iron grill pan to medium-high heat. Thread the chicken onto skewers, brush lightly with vegetable oil, and season with salt and pepper.
Grill the skewers, turning occasionally, until the chicken reaches an internal temperature of 165°F, about 10 minutes. During the last couple minutes, baste with 2-3 tablespoons of the prepared peanut sauce to develop a delicious glaze.
In a small bowl, mix together the peanut butter, reduced sodium soy sauce, freshly squeezed lime juice, brown sugar, chili garlic sauce, and grated ginger. Slowly whisk in 2-3 tablespoons water until the sauce reaches your desired consistency.
Plate the chicken skewers and serve immediately with extra peanut sauce, lime wedges, and a sprinkle of fresh cilantro.