Cut peppers into strips; cut onions into rings and slice apples into strips. Put into saucepan with olive oil and cook on medium heat until soft.
Cook chicken breast slices and add to the pepper/onion/apple mix. (If you are using deli chicken, cut into strips and add it to the
mix. The deli chicken is already cooked and just needs to be warmed.)
For the sauce, warm a saucepan on medium heat and add peanut butter, Worcestershire sauce, honey mustard, honey and water. Cook until creamy and soft.
Add three tablespoons sauce to chicken/pepper/onion/apple mix. Stir together. Put chicken mixture on hoagie/sub roll and sprinkle with mozzarella cheese.
Cut remaining half of apple and place it on a plate with leftover peanut butter sauce for dipping..