Tuscan Spiedini with Fresh Herbs, Lemon and Cracked Fennel Seeds

Combine oil, lemon juice, garlic, fennel seeds, red chili flakes, oregano, and vinegar in a medium bowl and put into a large tightly sealed plastic bag. Marinate at least 15 minutes room temperature or overnight in the refrigerator for best results.  Thread the chicken cubes on skewers, either alone or with chunks of your favorite vegetables such as red onion, bell pepper, or zucchini.  Preheat grill to medium-high heat and place on grill grate. Cook under direct heat (with the grill closed) for 10–12 minutes, turning occasionally, until cooked through and crusted on the outside.