According to NASS,1 nearly 1 million acres grow lentils, dry peas and chickpeas.

Planted on just under 400,000 acres in Montana, lentils bring $90 million to the state every year. Lentils are rich in protein, folate, dietary fiber, and iron.
[ NASS ]

Pea protein is one of the fastest-growing plant-based food ingredients. It’s valued for emulsification, gelling, and foaming properties.

The U.S. produces only 1% of the world’s chickpeas. Still, over 100,000 acres were harvested in Montana in 2020, and acreage is expected to increase in the future.
Oats
75,000 acres of Montana cropland grew oats in 2020.