Spaghetti one pot meal

Name: Spaghetti one pot meal
Ingredients: 1/4 packet Spaghetti; 1/2 chopped capsicum; 1 chopped carrot; 1 chopped onion; 1/2 cup sweet corn kernels; 1 deseeded chopped tomato; 1 tsp grated ginger; 2-3 chopped green chilli; 4-5 chopped garlic cloves; 1 tbsp milk powder; 1 tbsp pasta sauce; 1/2 tbsp tomato ketchup (optional); to taste salt; 1 tsp black pepper powder; 1 tsp chilli flakes; 1 tsp oregano; 2 cheese slice (optional); 1/2 tsp pizza seasoning to sprinkle; 1 1/2 cup water; 1 tbsp olive oil