Potato chips (packet)

One serving of Potato chips (packet) — 1 small pack (30 g) — comes to 165 kcal, 1.8 g protein, 15.9 g carbs and 10.5 g fat. Scaled to 100 g it works out to 550 kcal and 6 g protein, which makes it not a meaningful protein source on its own for a snack item. That single serving is about 11% of a 1,500 kcal day and 8.3% of a 2,000 kcal day, so it's more of a filler than a target-hitter on protein without much extra planning.

Walking off Potato chips (packet) takes roughly 4,125 steps, using the rough approximation of 0.04 kcal burned per step (a population-average estimate for a moderate walking pace, not a personalised number). At ₹20 a serving it costs about ₹222.2 for every 20 g of protein it delivers, which is a mid-to-high price for protein compared with dal, eggs or soya chunks. It fits nearly every Indian diet type, including vegetarian, vegan, eggetarian. It's typically eaten at the evening snack slot. It's a packaged/processed item, worth checking the label against this estimate.

If you want variety without changing the macros much, the closest swaps in the snack category are Aloo bhujia / namkeen, Bhel puri, Boiled kala chana chaat, Cream biscuit (Bourbon/Hide&Seek type) — each keeps a similar role on the plate while shifting the exact protein-to-carb balance a little.