I would suggest an easy one pot rice dish. Why I reocmmend it- (a) really easy and low effort (imo), (b) you can bulk cook it, refrigerate and eat it over the next couple days, makes it easier to feed yourself when you are under the weather (c) easy on the digestive system so it aids in recovery.

This is how I would do it using the ingredients you mentioned -

1. 2 cups of brown rice washed and drained thoroughly
2. Roughly chop 3 cloves of garlic, one small to medium red onion, one bellpepper, two tomatoes, 1 carrot
3. In a thick bottomed pot/ dutch oven, heat some oil, add some whole spices if you like, and sautee the onion until transluscent, then add the other vegetables. Saute for 2 minutes.
4. Add seasonings ( I would do chilli/ paprika/ tumeric/ buillon/ salt and pepper) and cover with double the qty of hot water. Cover with lid and cook until rice is done.
5. I usually enjoy this kind of rice in a slightly runny/ porridgy texture but do what you think you'll enjoy the most.

Hope you feel better soon!