Marinade the meat, overnight if possible.
Cut up the vegetables, and toss with some oil and the seasoning of your choice.
If using wooden skewers, soaking them in water will make them less likely to burn while cooking.
Slide the vegetables on the skewers - alternating vegetables.
Slide the meat on the skewers, avoid crowding them too tight so that they cook and brown properly.
Season the meat lightly and put over coals in the fire pit.
Place the skewers of veggies to the side, or put them on a little later than the meat.
Move the skewers around over the coals to make sure everything cooks evenly.
Cook until the veggies are done and the meat is ~150 degrees internal.
Serve over rice or with a pasta side dish.