A typical 1 pepper serving of green chili peppers contains 0.9 grams of protein (2 g per 100 g), which makes it only a minor source of protein. That covers roughly 2% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Around 20% of the calories in green chili peppers come from protein, so it is moderately protein-dense. It contributes to a day's protein total, but the bulk of what it delivers is energy rather than amino acids - treat it as a contributor alongside a denser source, not as the protein in a meal.
Among the 105 vegetables in the database, green chili peppers ranks 82nd by protein per serving, and 738th out of all 796 foods on the site. Set against black olives, another vegetable entry in the database, a serving carries about 0.6 g more protein (black olives has 0.3 g per 10 small olives).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving above is counted by piece at 45 g. Because pieces vary, the per-100 g figure is the one to use when comparing this against a food measured a different way.
Source: USDA FoodData Central #170497 - "Peppers, hot chili, green, raw" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
Green chili peppers protein FAQ
How much protein is in green chili peppers per 100 g?
Green chili peppers has 2 g of protein per 100 g. A typical 1 pepper serving (45 g) provides 0.9 g.
Is green chili peppers a complete protein?
No. Green chili peppers is an incomplete protein on its own; pairing it with other protein sources across the day covers the full range of essential amino acids.
How much of the Daily Value does a serving of green chili peppers cover?
A 1 pepper serving of green chili peppers contains 0.9 g of protein, about 2% of the 50 g reference Daily Value.
Is green chili peppers a good source of protein?
Green chili peppers is only a minor source of protein, and about 20% of its calories come from protein, which makes it moderately protein-dense. Set against black olives, another vegetable entry in the database, a serving carries about 0.6 g more protein (black olives has 0.3 g per 10 small olives).