Boyfriend moved in - should I charge rent?

Backstory: I’ve been dating a guy for about 9 months, he unofficially “moved in” about 4 months ago. He was in a less than ideal situation, was staying with a family member but didn’t have a room or a bed and they were making him pay rent. He was recently out of jail and trying to get back on his feet, but that’s a different topic. He was trying to save up to get his own place but he would’ve needed to get a roommate and I was a little worried about that with his past (drugs) I didn’t want him to be tempted by that with a roommate. He was staying with me 3-4 nights a week and then a few months ago the family member told him he had to stay with me for the weekend because he was sick and she was worried about covid with her kid and he just never left. I’ve never lived with a man or even thought about it until him. We’re both in our mid 30s. He is very good to me, tells me all the time how lucky he is to have me and how I’m the best thing that has ever happened to him. We’ve known each other through friends of friends for a while and he had a crush on me. He’s loyal and kind and genuine and honestly the best relationship I’ve ever had. He isn’t love bombing me or anything like that, it’s just a genuine caring and we’re both getting older and want to settle down and I think this is the person I actually want to do it with, which is weird of me to say because I’m so independent and stuff.

My question: is it appropriate to ask him to pay “rent”? I own my house and have for about 10 years, I bought it at a good time so my mortgage is only $800 for a 4/2, which I’ve handled on my own since I bought it. I could get at least $500-$600 for rent for one bedroom in my home based on location and all that. I realize him paying rent would pay for part of my mortgage and he wouldn’t be getting that added value of the equity in the home since he isn’t on the deed, but most people have to pay rent so I don’t know if that’s valid. He adds value to the household in other ways - he cooks and does the dishes most of the time. He also said he would take over my yard work and had me fire my yard guy, but he has only done it twice because he got bad poison oak, I don’t blame him not wanting to do it again, but he said he would still do it. That saves me maybe $50 a month. He started paying my utility bill right away without me asking, but that’s $150-$250 per month. Something I’ve thought about asking him to do is pay our weekly grocery bill which is about $80 per week and go to 50/50 on the utility bill. Right now we’re paying 50/50 on the grocery bill, but he eats a lot more food than me and a large portion of the grocery bill is going towards his breakfasts and lunches and it really has started to bother me, I think because he doesn’t contribute to my other bills and I end up paying more than when he wasn’t there between the grocery and food bills. I feel petty saying I’ll pay half of what I’ll eat and you pay the rest and to divide that up is just a hassle. If he’s paying it all that issue won’t really be there. When we go out to eat (3-4 times per week) we do 50/50 or I’ll pay this time you pay next time, which works well and I would continue to do. One thing to note is I make quite a bit more money than him, but I have a degree and he doesn’t and he’s still trying to get on his feet. I’m also paying for it in student loan payments, which is several hundred a month. He ends up having more disposable income than me because he isn’t really paying a lot of bills other than my utilities and some court costs he has, so he’s spending money on his hobbies and odds and ends and I’m not really because I’m saving and spending a lot of my income on bills. Don’t get me wrong, I treat myself to things when I want to, but I’m very responsible with my money and a little frugal. Is it reasonable to ask him to pay a portion of my mortgage (maybe half - $400) or the grocery bill and go to 50/50 on the utilities? Is there another solution I haven’t thought of? I know I need to have the conversation with him because it’s starting to build up and bother me, but I’d like to have a resolution to propose before I do it.