Chicken tikka fajita Shawarma

Name: Chicken tikka fajita Shawarma
Ingredients: 3 Shawarma bread or pita bread; 1/2-1/2 Red and green peppers; 1 Chicken breast fillet; 1 Cucumber; 1-2 Onion; 1 Tomato; 5 cloves garlic; 3 tbsp Vinegar; 2 tsp Lemon juice; 1/2 cup youghurt; 1/2 cup Mayonnaise; 1-1/2 tsp Black pepper; 2 tsp Chicken tikka masala (shan or national); to taste Salt; 1/2 cup Chilli garlic sauce (any good brand); 2 Cheese slices light cheddar; 3 tbsp Cooking oil/ Olive oil; 1/2 tsp Dried thyme and oregano; 1/4 tsp Red chilli powder