Greek Shish Kebabs

I adapted this recipe from allrecipies.com  It is delightful & I usually double or triple it for my family.  

Ingredients:

1/4 cup olive oil
1/4 cup lemon juice
1/4 cup apple cider vinegar
2 cloves garlic, minced (or 1 tbsp onion powder)
1 teaspoon ground cumin
1 teaspoon dried oregano
1/2 teaspoon dried thyme
1/4 teaspoon salt
1/4 teaspoon ground black pepper
2 pounds skinless, boneless chicken breast, cut into 1 1/2-inch pieces
6 wooden skewers
2 large green or red bell peppers, cut into 1-inch pieces, or 6 mini sweet peppers
1 large onion, quartered and separated into pieces
12 cherry tomatoes
12 mushrooms
1 zucchini cut into wedges

Directions:

1. Whisk the olive oil, lemon juice, vinegar, garlic or onion powder, cumin, oregano, thyme, salt, and black pepper together in a large glass or ceramic bowl. Add the chicken and toss to evenly coat. Cover the bowl with plastic wrap; marinate in the refrigerator for at least 2 hours.
2. Soak wooden skewers in water for about 30 minutes before use.
3. Preheat an outdoor grill for medium-high heat; lightly oil the grate.
4. Remove the chicken from the marinade and shake off excess liquid.  Alternately thread pieces of the marinated chicken with pieces of bell pepper, onion, cherry tomatoes, zucchini, and mushrooms onto the skewers. I like to paint the marinade on veggies after I first place them on the grill (the marinade had raw meat with it, so only do this at the beginning!)
5. Cook the skewers on the preheated grill, turning frequently until nicely browned on all sides, and the chicken is no longer pink in the center, about 10 minutes.