Add 1 cup water to instant pot. Fit insert with trivet. Place chicken on trivet. Lock lid; set valve to sealing. Program for manual-high and 20 minutes. Use quick release or natural pressure release.
Remove chicken from instant pot and shred using two forks or an electric mixer. Set aside.
While chicken is cooking, cook noodles according to package directions. Drain. Chop lettuce.
Add chicken, noodles, lettuce, carrot, and sesame seeds to a large bowl. toss well. Set aside.
Sauce
Combine all sauce ingredients in a blender. Blend well. Pour over chicken mixture and toss well to coat.
Cook Chicken: Stovetop
Bring pot of water to a boil. Add chicken. Boil 20 minutes. Remove from water and shred chicken with two forks or in an electric mixer. Set aside.
While chicken is cooking, cook noodles according to package directions. Drain. Chop lettuce.
Add chicken, noodles, lettuce, carrot, and sesame seeds to a large bowl. toss well. Set aside.
Sauce
Combine all sauce ingredients in a blender. Blend well. Pour over chicken mixture and toss well to coat.