Reddit mentions of Well Fed, Flat Broke: Recipes for Modest Budgets and Messy Kitchens

Pinterest might be an easier way to find links. I know not a lot of guys use it... but there's a reason girls are obsessed with it.
Type in meal prep with your choice of adjective (cheap, easy,
vegetarian, chicken, etc) and you'll come up with tons of options.
But in the meantime, here are a few links! Chicken burrito bowls. Teriyaki Mushrooms with steamed broccoli, rice, and salmon if you're feeling fancy (I watch for sales on the frozen preseasoned fillets and just pop them in the oven the night before to avoid them sitting cooked in the fridge for too long). Greek Chicken Bowls. When I'm feeling ~decadent~ and have enough time I like to make a big batch of mushroom bourguignon to go with noodles or mashed potatoes during the week. Crockpot meals are also usually good for 2-person meal prep because the recipes are usually designed for families/parties. Throw them in at the start of your prep day, then portion them out with your meal prep basics like rice and veggies. Bonus points if one day you prep a bunch of crockpot freezer meals so that you can either have them ready for your foreseeable prep days or in the middle of the week when your fresh prep has run out. There are too many crockpot options to link up so I'll just say again, Pinterest it up! I do have a killer pot roast recipe if you want it but if you're avoiding beef it's null. Lastly, I'd recommend the cookbooks Well Fed, Flat Broke and Good and Cheap which aren't meal prep specific, but are fantastic resources for learning how to cook cheaply and deliciously. Some of their big batch or casserole recipes work well for meal prep (WFFB's tuna dill pickle casserole or potato mushroom thingie, GaC's peanut chicken come to mind). Others are just nice quick recipes to have around when you need them. Best of luck!