It is not a guarantee that you can not get hired, but realize you will be competing against science majors when you apply. Make efforts to constantly improve your public speaking skills. The ability to communicate with the jury is one very important part of the total package for the forensic scientist. After you are trained and your lab knowledge and technical expertise are established, you must be able to relate what you know in a believable, interesting and coherent manner. Some outstanding lab experts have limited communication skills.
Some forensic experts have oral skills which are superior to their lab abilities.
Anyone can learn to eventually be a good communicator with moot court practice and, even unfortunately, trial and error practices. Always work to improve your writing skills. Excellent writing skills are a big plus for any forensic expert. Documenting lab results that will be picked over by the other side is an important and time-consuming part of your analysis. Your basic writing skills will constantly be tested and on display.