I like to fire up the grill and cook a large variety of meats in one wack for the week. I'll do steak, pork, chicken, etc.... Grill vegetables with them because grilling them makes them so much tastier.
I bought a rice cooker and make a large heap of rice. I sometimes mix pinto beans into the rice. From there I'll mix in meat in and portion them into glass containers. Being a spice addict, I load it up with hot sauce and red pepper. I also like making an overnight oat bowl with Greek yogurt, blueberries, cranberries, raisins, oatmeal, lactose free milk, chia seeds, and some monkfruit sweetener. These meals are insanely simple, but also super easy to roughly track calories.
I strayed away from protein powders. I used to supplement as ton with them. I do maybe one a day and it's mixed in with fruit or a milk and oatmeal combo.