01 - In a mixing bowl, whisk together the olive oil, Vegemite, honey, minced garlic, smoked paprika, salt, and pepper until smooth and well combined.
02 - Coat the chicken pieces evenly with the Vegemite marinade, ensuring full coverage. Allow to marinate for at least 15 minutes at room temperature, or cover and refrigerate for up to 4 hours for deeper flavor penetration.
03 - Heat a grill pan or barbecue over medium-high heat. Grill the chicken for 6 to 7 minutes per side until nicely charred and cooked through to an internal temperature of 165°F. Let rest for 5 minutes, then slice thinly against the grain.
04 - In a small bowl, combine the mayonnaise, lemon juice, and Dijon mustard, stirring until smooth and creamy.
05 - Warm the tortillas or flatbreads in a dry skillet over medium heat or in the microwave for 15 to 20 seconds until pliable and easy to fold.
06 - Lay each tortilla flat and spread a generous spoonful of the sauce along the center. Layer with baby spinach, sliced cucumber, julienned carrot, red onion, and slices of the charred chicken.
07 - Roll each wrap tightly, tucking in the sides as you go. Slice diagonally in half and serve immediately.