In a medium bowl, combine peanut butter, sugar, and baking powder. Stir to combine.
Add egg, mixing until thoroughly combined. Finally, add chocolate chips and stir until incorporated.
Portion dough into balls (about 1.5 Tablespoons each; see note) and place on ungreased cookie sheet. I lined mine with silpats (see note).
Bake 10-12 minutes, or until just starting to brown at the edges. I turned the cookie sheets around halfway through baking to ensure an even bake. Allow cookies to cool on the cookie sheet for at least 5 minutes before transferring to a wire rack to cool.Enjoy!
Notes
Note on portioning dough: I used my medium cookie scoop (link here), which holds about 1.5 Tablespoons of dough. Note on silpat: the silpat isn't necessary, as the cookies can be baked on an ungreased cookie sheet, but I like the easier cleanup. If you're interested in a silpat for yourself, you can find them here. It's also worth pointing out that if you choose not to use a silpat, your cookies might brown up a little sooner than mine did.