In a bowl combine the chickpea flour, salt, baking powder, Cumin Powder, Coriander Powder and Chili powder and mix it well. Create a mold in the center of the mix and add in little water first. Mix it all well and add in more water if it is too dry, so that u can form a thick batter. The end result and thickness should be as shown inn the picture.
Now heat up the Oil which you kept aside for deep frying. In the mean time cut your Onions and add them to the batter and mix them in well. To test if the oil is hot enough, drop in a bit of batter, if its ready it will pick up and fry. With a spoon add in small batches of the onion batter mix. don't let the skillet get over crowded or they ll stick all together. Turn the pakoras in between and fry them till they reach a golden coloring. Repeat the process with the rest of the batter.