It sounds like you’ve got a good balance in there. Just remember that when you have a rough day (any long term plan will have a few of them) to forgive yourself quickly and pick right back up.
As for the chicken…there are a few things that my wife and I have done to make frequent chicken eating more enjoyable. Roasting chicken with various spices can be quite good. More than that, roasting the veggies can make them delicious. Sweet potatoes, carrots (easy-ish to burn, so watch out), and asparagus are among the best, but just about any veggie drizzled in olive oil will come out really nice. You can also throw the chicken in the oven with a marinade. What we do is put it in some oil and and an acid (lemon juice), and then some spices in the marinade. The chicken soaks a lot of it up, and then the remaining liquid can be drizzled on it and the veggies. So long as you don’t use too much oil (drizzle for the veggies, and about 2TB/lb of chicken) then you don’t really have to worry about it. Plus, it’ll make sure that you get enough quality fats in your diet to avoid hormonal disruption (making cutting easier to do long term). One thing to watch out on pre-made spice mixes is that a lot of them are high in sodium. That’s not necessarily a bad thing, but if you’re using a lot and weighing frequently, it could skew the results through higher-than-normal water retention. Some spice mixes are low sodium, and you can of course come up with your own combinations with what you have.
Roasting chicken and veggies will take a little more forethought than grilling, but it’ll also make them tastier, longer.
Good luck!