Here are the main ingredients you will need.
I am using a 4 oz portion of chicken breast for the sandwich (16 oz in total to make multiple meals for the next day.) Butterfly/cut your thick chicken breast into thinner pieces..around 1/2" thick.
Season with a pinch of black pepper, dried thyme and kosher salt on both sides.
Turn stove top to medium heat, add 1 tsp of olive oil.
When pan is hot at medium heat, put chicken in. Leave it on that side to cook for 3-4 minutes, don't turn them.
After 3-4 minutes, turn the chicken to the other side. Leave it again to cook 3-4 minutes.
Using a knife, carefully slice your avocado. I am using 1/4 of a large avocado.
Once your chicken is cooked, place it on a plate to rest for 2 minutes while you prepare the rest of your ingredients.
Toast your 2 piece of whole wheat bread.
You may use low fat mayonnaise or mustard. I like mayo in mine.
Spread some mayo on the bread. You can do it on both slices, I only do it to one slice.
Using a knife, cut your chicken breast on a slight angle into even pieces.
Add your lettuce first on top of bread.
Finally add avocado slices.