If by Rajgara / Rajgira you mean amaranth seed/flour, then yes, it is generally bhakshya in Jainism for lay Jains, because it is a seed/grain-type food and not a root vegetable. Jain dietary guidance commonly allows grains, pulses, nuts, seeds, fruits, and other non-root foods, while avoiding root vegetables, honey, meat, eggs, and other harmful items. ( jainknowledge.com)

So, in simple words: Rajgara is usually allowed in Jainism. If it is prepared without forbidden ingredients and according to your family/sect rules, it is considered bhakshya. ( jainknowledge.com)