Another idea for quick lunch: Quesadilla.
All you need is:
Some veggies chopped (such as tomato, onion, bell pepper, mushroom etc.)
Pinch of salt (optional)
Pinch of red chilli powder (optional)
Pinch of taco seasoning (optional)
1 tbsp oil
Saute veggies in 1 tbsp oil. If you want more flavour and spices, add salt, chilli pepper, and taco seasoning. Take a tortilla. Spread a thin layer of cheese. Add some veggies and spread another layer of cheese. Fold the tortilla in half. Shallow fry it on a tava while pressing with a spatula.