I run EcoFlow Delta 2 inside. The day I got it we did some tests. Right out of box, at 30%, we were able to microwave a big bowl of rice to make some riceballs. That's about 3 minutes of run time and brought it down to 28%. Then, we ran hair dryer for 5 minutes to mimic how long it takes for a girl to dry her hair (we chose 5 minutes because that what we, a bunch of single guys, THINK how long it takes). That brought down anther 1%. Then we ran diesel heater for 4 hours to see how much diesel and power it would take. That brought it down to around 23%.
Sure, the test didn't run air fryer and probably drew nowhere near the consumption of air fryer, but it is still pretty capable. And on top of that, you can also do add-on batteries to give yourself more power. Now I have Delta 2 + Delta Max add-on battery, giving me total 3kw of power. It is enough for me to run my fridge and starlink the whole night with plenty left the next day. I could also probably run my EcoFlow Wave on it and all 3 at the same time, but that needs to be tested.
If OP is looking for air fryer option because of fire ban, just bring a propane stove. Most restricted places in PRCali still allow fire that can be shut off with a valve/ switch even during fire ban.