Combine the ground cumin and coriander in a small bowl, mixing together well.
Heat a large skillet over medium high heat.
Add the cubed chicken thighs to the skillet and sprinkle 1 teaspoon of spice mix and 1.5 tablespoons of soy sauce over the chicken.
Cook chicken for 5 minutes then add the finely minced garlic, minced or grated ginger, diced red bell pepper, and diced onions and continue to stir and cook for 5 more minutes, or until the chicken is cooked through. Remove from pan and set aside.
Return the skillet to the stove top continuing to heat over medium heat.
Add the natural peanut butter, red curry paste, remaining 1 teaspoon of spice mix, 1.5 tablespoons of soy sauce, and chicken stock to the pan and stir together.
Add the chicken, onion, and bell pepper back to the sauce and continue to cook for 5-10 minutes. Until the sauce thickens and coats the chicken well.
Remove from the heat and add the lime juice and chopped cilantro. Stir it into the dish and serve immediately.