Add finely chopped red onion to lemon juice and salt and set aside.
Heat oil in a large skillet. Add onion, garlic, ginger and pepper and sauté over medium heat until browned (about 5-8 minutes).
Turn heat down to medium-low and add the coriander, cumin, turmeric, cumin, paprika and garam masala.
Cook onion mixture with spices for a minute or two, then add the tomatoes and any accumulated juices, scraping up any bits that have stuck to the pan.
Add the water and chickpeas. Simmer uncovered for 10-15 minutes.
Stir in red onions, salt and lemon juice mixture before serving.
Serve over rice or with warmed naan bread (phase 1).