Set Instant Pot to sauté for 10 minutes and allow to preheat.
Hammer chicken to 1 inch thickness with a meat mallet and season both sides with thyme and salt. OPTIONAL – Marinate chicken in broth and wine for at least 20 minutes, or up to 24 hours in fridge.
Place 2 Tablespoons Oil in Pot and add chicken. Cook on each side until browned, or about 1 minute on each side. Remove chicken and set aside.
Add remaining oil to pot and add onion. Sauté, stirring occasionally, until onion starts to turn translucent, around 3-5 minutes.
Add garlic and stir for another 30 seconds.
Add chicken, along with wine, mustard and broth, to the Instant Pot.
Cook for 5 minutes on manual setting, then manually release steam.
Carefully remove lid and set aside the chicken breast.
Set Instant Pot to sauté and add honey to remaining liquid to create a sauce. Stir frequently until gravy like consistency is reached.
10. Pour sauce over chicken and serve.
Notes
Weight Watchers Freestyle = 3 Points per serving for 6 servings, using chicken broth instead of white wine