I am thin and eat a fair bit - probably more calories than most. I have a naturally fast metabolism but I do eat healthy and am moderately active. I'm 36, so expect it to slow down in 40s as it did for my mom.
A lot of the food I eat is organic.
I eat non instant (but quick oats) oatmeal with frozen berries and a banana almost every morning within 30 minutes of getting up. I have a cup of coffee at work - with full fat half and half and one splenda and one sugar (hate artificial sweeteners but got used to that in my coffee years ago and can't seem to stop).
I usually eat raw almonds for a snack, and dry cereal in the morning before lunch. Lunch is typically left over dinner, or something from home like egg salad sandwich, or hummus and bread, or almond butter and bread, or soup and a bagel with cream cheese from across the street, or a huge (nonmeat) salad from a nearby place with no cheese and full fat dressing (I like healthy fats). My lunches are not that big but I do like to have a few snacks throughout the day.
I do a quick work out usually once during the work week after I've digested lunch. It's usually a 10 minute cardio warm up and 20 minutes of free weights and stretching. Usually 2-3 week I take a quick walk at work, aim for 20-25 minutes. I also work out on the weekends and try to get in a few walks on the weekends.
I have a snack or sometimes two in the afternoon, usually includes a skim chai latte or skim vanilla latte (medium) and something like greek yogurt and a Kind bar (combo of fruits and nuts with no additives etc.), or string cheese, hard boiled eggs, veggie chips, etc.
Dinner: I cook 3x a week for 6 meals and sometimes leftover lunch depending. I make all kinds of things in 20 minutes or so (sometimes cook time takes longer), mainly vegetarian but sometimes chicken or ground turkey, I use the crock pot about once a week. I like soups, chili, lasagna, quiche, enchiladas, quesadillas, beans and rice, some quinoa-based dishes, I make my own salad dressings for salads and I like to eat toasted nuts in my salad and add an apple or dried cranberries.
I have a big sweet tooth and sometimes at night have a glass of milk and usually dessert every night, just in moderation - a couple of cookies, a cupcake, some peanut M&Ms, etc.
We don't eat a lot but I do like going out for Mexican or ordering pizza. I have a glass of wine or two a week.