In a mixing bowl, add roughly chopped tomato, onion, chickpea, lemon juice, serrano pepper, and salt.
Combine and toss them gently till lemon juice coats all the ingredients.
Serve immediately.
Notes
Easily customize the spice level by adjusting the amount of green chilies or removing the seeds for a milder flavor.
It is best served fresh but refrigerate the ingredients separately in an airtight container for up to a day if you prefer storeing. However, chickpeas are suitable to freeze for later use.
Pair it with Indian flatbreads and curries such as Instant Pot chicken curry, or enjoy it with simple steamed rice for a satisfying meal.