[Adding an eat feature to my Fighting Bot]

Don't know if you are still having issues but it could be this.

    else if (getAPIContext().localPlayer().getHealthPercent()) {
        eat();

In the ELSE IF at the bottom, this just gets the Health Percent, you will need to check it against a value like such. 
 

else if (getAPIContext().localPlayer().getHealthPercent() <= 50) {
        eat();

This will check if your health is less than 50 and then call the eat() function.