Using a medium bowl, whisk in the flour, baking powder, salt, and cocoa powder together
Using a large bowl, beat the eggs and sugar until combined
Mix in the oil and rum until combined
Gradually mix in the dry ingredients until combined
Fold in the chocolate chips
Cover with plastic wrap and place into the fridge for an hour
Preheat oven to 350 degrees and line two cookie sheets with parchment paper
Using a small bowl, pour the powdered sugar into it
Using a small ice cream scooper, scoop out some dough and roll it into a ball
Coat the cookie dough in the powdered sugar
Place onto the cookie sheet
Place about 11 more cookie balls onto the tray
Bake in the oven for about 8-10 minutes or until the cookies are puffy and firm around the edges
Remove from the oven and allow to cool for 5 minutes before moving to a wire rack
Allow cooling completely before enjoying!