I used to lift competitively, i dont anymore but the way of eating stuck with me, even if the quantities are lower:
Brekky: homemade flatbread (literally just flour,salt,water,oil, baking powder) and homemade hummus with a fruit and leafy green smoothie
Protein shake, homemade soymilk, banana, peanut butter, pea protein, sometimes oats
Lunch is just rice and tofu, sometimes veggies but usually not, i just microwave it at work.
Dinner is pasta with cannellini beans
Super cheap, easy to meal prep. Easily adjustable in amount for when i was counting calories, tasty enough. And also easy to change sauces and spices if i get tired of it.