1 tbsp. canola or vegetable oil2-3 boneless chicken breast cooked and sliced into bite-sized pieces (or about 2 cups leftover cooked chicken pieces)1 carrot, cut into matchsticks1/2 red pepper, cut into matchsticks1/2 onion, cut into thin slices1/4 cup canned bamboo shoots, cut into matchsticks(optional) 2 cups gr