We all struggle with our weight so I'm cautious about pasta myself becuase it' shard to get the carbs to other food ratio right. But if he's super sporty and likes pasta, perhaps that's less of an issue. One thing I do is a lot of chunky, substantial pasta sauces. Things like chunks of chorizo and aubergine with a tomato/chilli sauce or sausages with roasted butternut, fennel and some greens. Or a "no-cook" option of ricotta, spinach, garlic, lemon and some smoked or flaked salmon.
What about noodles? We do rice or wok noodles quite often as part of a stir fry or similar and allows us to vary things a bit. Or rice noodles in curry works well.
If he likes potatoes, jackets with something on top? I'm a big believer in doing a salad alongside to help with digestion. We do tuna and cream cheese often, or sometimes bacon and creme fraiche. Obviously beans and cheese is always a quick and easy option and lots of people will stick curry/chilli on a jacket too.
Does he like bread? We buy (or, when I can be bothered, make) flatbreads and use those as the base for all kinds of things. This week we'll be having steak with fried mushrooms and a slaw. I had some leftover lamb a few weeks ago so we did it as as sort of schwarma with leftover lamb, hummus and some griddled aubergines.
Or if he likes wraps, fajita style things? Although again, I'd say that you could stick some curry sauce in a wrap and it would be fine. If you look up bunny chow - it's a South African curry served INSIDE a crust of bread. My point is that the carbs that are traditionally served with a particular meal don't HAVE to be served with that meal.