Police say a man asked to see an expensive watch at the Tick Tock watch and jewelry store, then tried to run out of the store with the watch.
The owner gave chase and fired several rounds at the man's vehicle.
The suspect, believed to be armed, was able to get away.
The same owner last year shot and injured a man during a takeover-style robbery.
Westminster Police said Friday's suspect was described about 25 to 30 years old who is 5-foot-10 to 6 feet tall with a thin build, brown hair and was wearing a red polo-type shirt and black-rimmed glasses. He fled in a dark-colored car.