In a large pot of boiling water, cook noodles according to package instructions. Rinse under cold water and drain.
Meanwhile, make Spicy Peanut Dressing: In a small bowl, whisk together peanut butter, hot sauce (sambal oelek), rice vinegar and soy sauce. Stir in sesame seeds.
Divide Spicy Peanut Dressing equally among 4 pint-sized mason jars.
Divide soba noodles over dressing. Layer remaining ingredients, ending with chicken. Top with lids and refrigerate up to 5 days.
To serve, pour onto plate or bowl, stir and enjoy.