Can I eat rajigria chikki

Yes, rajgira chikki is generally acceptable in Jain diet for many people, because rajgira (amaranth) is commonly used in fasting and vrat foods.

But keep these points in mind:

• If you are observing a strict Jain upvas, then no solid food is taken, so chikki would not be allowed.
• If you are doing ekasana / beasana / vrat-style eating, rajgira chikki is usually considered acceptable.
• Make sure it does not contain any ingredients you avoid, such as:

- honey - root-based additives - non-Jain mixtures or flavorings

So, in short: yes, usually allowed — except during strict fasting.