Chicken Fajita Sandwich/Burger,Quick

Ingredients
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Chicken boneless 300gm
Salt 1 tsp or to taste
Red Chilli flakes 1 tsp
paprika powder 1/2 tsp
Cumin powder 1/2 tsp
Black pepper powder 1/2 tsp
Vinegar 1 tbsp
Soy Sauce 1 tbsp
Olive oil 1 tbsp
Red Chilli 2-3
Onion Slices 1
Capsicum julienne 1
Cheddar Cheese Slice
mozzarella cheese grated
Fresh coriander chopped
Burger Buns
Butter
mayonnaise