Make the marinade

Make the chicken. In a small bowl combine coconut milk, garlic, turmeric, cilantro, brown sugar, fish sauce, and salt.

Marinate the chicken

Pat the chicken dry. Using a mallet or rolling pin, pound the chicken tenders until very thin. Arrange the chicken in a single layer in a baking dish or rimmed baking sheet, then pour the marinade over top. Cover and marinate, refrigerated for 2 hours or up to overnight.

Make the peanut sauce

Meanwhile, make the peanut sauce. To a small saucepan, add the coconut milk, curry paste, peanut butter, salt, sugar, vinegar, and ½ cup water; whisk to combine. Bring the sauce to a simmer over low heat and cook, whisking, until slightly thickened, about 5 minutes. Remove the saucepan from heat and let sit for 10 minutes before serving. If the sauce gets too thick while cooling, reheat it over low and add a splash or two of water.

Grill the chicken

Preheat the grill on medium. Tightly thread the chicken onto the skewers, dividing evenly. Place the skewers on the grill and cook, undisturbed, 3-5 minutes per side. Transfer to a serving platter.

Serve

Garnish the chicken with cilantro and peanuts. Serve with the peanut sauce on the side.