That will seriously malnourish your dragon. How much and what they eat depends on how old your dragon is. Here's an excerpt from my Care Sheet I made for spreading good info for Bearded Dragons :) Live Prey. Silkworms (Best), Phoenix Worms, Crickets (Gut Load and Dust) or Roaches (Dubia or Lobster to name two).
Namibia boasts the largest free-roaming population of black rhino in Africa, and the largest cheetah population in the world. Namibia is also home to a unique population of elephants that have adapted to the arid climate.
Life in the desert. Lying between a high inland plateau and the Atlantic Ocean, the Namib Desert extends along the coast of Namibia, merging with the Kaokoveld Desert into Angola in the north and south with the Karoo Desert in South Africa.