chicken (or other poultry, large animal meats, etc) is not a good food to give to bearded dragons. Bearded dragons should be getting insects and greens/vegetables, nothing else.
BDLvr already listed a great website with a list showing what greens/vegetables a bearded dragon should eat and how often so I won't post it again.
chicken baby food can be fed to bearded dragons in only one situation...as a base for force feeding a sickly dragon. But this should be only temporary till the dragon can eat solid food again. There are better ways to make a force feed slurry than using baby food. Ground up silkworms would be better to include...though rather disgusting to see.
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PHLdyPayne