In a small bowl, whisk flour, baking soda, baking powder and salt together. Set aside.
In a large bowl, mix the butter and sugars together until combined well. Whipping them together will create a cake-like cookie, just mixing until combined will create a gooey cookie. I usually go for gooey.
Add eggs one at a time, mixing well between each addition. Add the vanilla and mix.
Gradually add the dry ingredients, paying attention to the dough consistency. The dough should be slightly sticky when touched. You may need to add a little extra flour, or leave a little bit out.
Add in the chocolate candy and mix until evenly distributed.
Drop rounded tablespoons onto parchment lined cookie sheets (or you can grease them), I usually fit a dozen per sheet.
Bake for 8-10 minutes, rotating the sheets halfway and checking at 8 minutes. The cookies should appear done on the edges but still soft in the middle when they are finished cooking.
Let cool on the cookie trays for 5 minutes before transferring to a cooling rack.
You can use any chocolate candy you have, I chop them into the size of a chocolate chunk you would purchase at the store.