In small bowl, whisk together coconut milk, peanut butter, vinegar, 1/2 tsp salt and red pepper flakes.
In very large skillet, heat oil over med-high heat. Season both sides of chicken breasts with remaining salt and black pepper. Add chicken to skillet; cook 4 min. Flip chicken over; cook until center done and no longer red, about 4-5 min. Transfer to plate, cover, and keep warm.
Cook pasta until al dente, firm yet tender, per package directions. Drain, return to pot, add 1 Tbsp olive oil to prevent sticking.
Place skillet over med heat. Add 1 bag of coleslaw mix, scallions, 2 Tbsp water. Cook, stirring frequently, 2 min. Add second bag of coleslaw mix; cook 2 min.
Slice chicken into thin strips. Stir the chicken strips and the coconut-peanut sauce into the vegetables in the skillet. Cook until slightly wilted, 2 minutes.
Combine the pasta and chicken mixture in one of the pots or a bowl. Top with the chopped peanuts.