Lauki (bottle gourd) sabzi

One serving of Lauki (bottle gourd) sabzi — 1 katori — comes to 47 kcal, 0.6 g protein, 1.9 g carbs and 4.1 g fat. Scaled to 100 g it works out to 39 kcal and 0.5 g protein, which makes it not a meaningful protein source on its own for a vegetable item. That single serving is about 3.1% of a 1,500 kcal day and 2.4% 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 Lauki (bottle gourd) sabzi takes roughly 1,175 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 ₹5 a serving it costs about ₹166.7 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, Jain, vegan. It works at lunch and dinner. It's commonly eaten on fasting days (Navratri/Ekadashi-style).

If you want variety without changing the macros much, the closest swaps in the vegetable category are Beans thoran / poriyal (with coconut), Bhindi sabzi (jain, no onion), Cabbage-peas sabzi, Sweet corn, boiled — each keeps a similar role on the plate while shifting the exact protein-to-carb balance a little.