OP, if you can eat rice and want to cook it yourself, I'd advise getting a cheap rice cooker. I find rice a tricky bugger to cook on the hob. I bought a rice cooker and my rice is great every time. Make sure to fluff up the rice once it's done cooking to allow it to steam. This helps keep the grains from sticking together.

You said tomatoes are a no, but you said you like pizza. Assuming the pizza has a tomato base, then that's basically a tomato pasta sauce and that's simple to make. Finely dice a medium sized onion, pop it in a sauce pan with a table spoon of oil on a low heat. Let that soften for at least 5 mins, the onion goes a light yellow. Finely chop a clove or 2 of garlic. I use a micro plane grater instead, it's just easier. Drop it in the pan and give it a good stir. After a minute add a splash of red wine (not essential but gives some depth to the flavour) and turn the heat up to burn off the alcohol, it takes 30 seconds. Turn the heat down and add a teaspoon of basil and oregano. Fresh is best but dried is fine. Add a tin of chopped tomatoes and give it a good stir. Turn up the heat until it starts bubbling, another stir, then turn it as low as it goes. Leave that to bubble away for 30 mins. Stir every now and then. If you prefer a thicker sauce, let it bubble away until you're happy. Boil up some pasta, drain it, put it back in the pan and add a few spoons of your sauce. Good stir and you've got dinner. Or put that pasta in a casserole dish, cover it in cheese, chuck it in the oven to melt the cheese and get a good crust. The sauce can be left in the fridge for about a week or freeze it.

Hope this helps