Preheat oven 350°.
To a bowl, add flour & Baking Powder and whisk together.
In a separate bowl, mix the butter and sugars.
Add 1/4 tsp salt (optional).
Add Peanut butter and mix until incorporated.
Mix in Egg and Vanilla extract then add the flour to the mixture and beat together.
Add Chocolate Chips & mix.
Roll dough into 1 inch balls and place on baking sheet.
Flatten Cookies with fork in criss-cross Pattern.
Bake for about 10 minutes.
Allow cookies to cool completely on baking sheet before transferring them.