01 - In a large bowl, whisk together the olive oil, soy sauce, fresh lemon juice, minced garlic, Worcestershire sauce, honey, dried oregano, black pepper, and kosher salt until well combined.
02 - Add the sirloin cubes to the marinade and toss to coat evenly. Cover the bowl with plastic wrap and refrigerate for at least 1 hour or up to 4 hours for deeper flavor penetration.
03 - Preheat your grill or grill pan to medium-high heat, targeting approximately 400°F. If using wooden skewers, ensure they have been soaked in water for at least 30 minutes to prevent burning.
04 - Thread the marinated beef cubes and prepared vegetables alternately onto the skewers, distributing the colors and textures evenly across each one.
05 - Place the assembled kabobs onto the preheated grill. Cook for 10 to 12 minutes, rotating every 2 to 3 minutes, until the steak develops a nicely browned exterior and the vegetables are tender-crisp.
06 - Remove the kabobs from the grill and let them rest for 2 to 3 minutes before serving to allow the juices to redistribute throughout the meat.