01 -
In a small bowl, whisk together olive oil, lemon juice, garlic, oregano, salt, and pepper until fully combined.
02 -
Place diced chicken into a large resealable bag or bowl. Pour marinade over the chicken and toss to coat evenly. Seal and refrigerate for 45 minutes to 1 hour.
03 -
If using wooden skewers, soak them in water for 30 minutes. Thread marinated chicken onto skewers, leaving slight spacing between pieces.
04 -
Preheat grill to medium-high heat. Oil grill grates to prevent sticking. Grill skewers 8 to 10 minutes, turning occasionally, until chicken reaches an internal temperature of 163°F. Optionally baste once with remaining marinade during grilling. Remove and let rest 5 minutes before serving.
05 -
Preheat oven to 350°F. Arrange marinated chicken pieces on a greased baking sheet. Bake for 5 to 7 minutes per side until internal temperature reaches 163°F. Allow to rest 5 minutes before serving.
06 -
Warm pita bread on grill or in oven. Fill pita with grilled chicken, sliced tomatoes, red onions, and tzatziki. Garnish with lemon slices and a drizzle of fresh lemon juice.