Chicken stuffed naan

Name: Chicken stuffed naan
Ingredients: 4 cups all-purpose flour; 1/2 tsp. salt; 1 tsp. instant yeast; 1 tsp. baking soda; 3 tbsp. milk powder; 6 tbsp. ghee, divided; 2 tbsp. yogurt; As required, lukewarm water; 2 chicken breasts, boneless; 3 cups water; To taste, salt; 1 tsp. ginger-garlic paste; 1 tsp. chilli powder; 1/2 tsp. turmeric powder; 1 tsp. coriander powder; 2 tsp. pepper powder, divided; 2 tsp. tikka masala; 1 tsp. chicken powder; 2 tbsp. oil; 1 onion, diced; 4 tbsp. cilantro, chopped; 1 egg; 2 tbsp. milk; 2 tbsp. sesame seeds