Yes, bearded dragons can eat grapes but occasionally and not on regular basis. Because grapes are high in fiber which is great for your dragon but it is also high in sugar and oxalates which could harm your dragon.
The chart below explains the nutrition chart of grapes.
|Amounts Per Selected Serving||%DV|
How to Feed…
Make sure grapes are cut in small pieces for your dragon to eat.
Complete list of food you can give to your bearded dragon.