Combine all the ingredients for the marinade in a bowl and blend.
Place the skewers in a long shallow dish.
Pour the marinade over the skewers and refrigerate 2 - 4 hours.
Remove the skewers from the marinade and place onto a well-oiled section of the grill or large sauté pan.
Cook the chicken and shrimp for 3 - 4 minutes, until done.
In a saucepan over medium heat, combine peanut butter, coconut milk, lemon juice, soy sauce, brown sugar, ginger, garlic, and cayenne. Cook for about 5 minutes until consistency of heavy cream, stirring frequently.
Transfer to a blender and pulse briefly 3 - 4 times.
Add the chicken stock and heavy cream. Blend for 1 minute, or until it is smooth and creamy.
Toss the cooked lo mein noodles with 1/2 cup peanut sauce.
Reserve remainder for dipping.
Place the skewers on top of noodles and serve.