also do you know your oven? if the reciped called for baking the chicken breast at 350, that means putting the tray on the bottom most rack, if it's in the middle or top rack, then youre already loosing lots of heat.
baking is bottom rack
convection is all racks (why not just use convection for everything? some baking is sensitive like macarons or souflee and shit and can't tolerate the forced air)
broiler top rack if you want to roast the meat and get a good color
also if youre not confident in your oven, or you don't know your oven, get an oven thermometer
Rubbermaid Commercial Products Stainless Steel Monitoring Thermometer for Oven/Grill/Meat/Food, 60-580 Degrees Fahrenheit Temperature Range, Easy to Read Food Thermometer For Cooking
and see if your temps are true (don't immediately check the temp once pre-heat hits 350, it'll read low b/c thats only reading the oven air temp, not stuff that is inside, so the thermometer itself also has to heat, it's also why some of us add extra time in our ovens cuz we're lazy and leave our pizza steels/pizza stones in there b/c it's just a hunk of mass sucking up heat)
i don't bake much and i don't know my oven after 2years here, in fact when i did move in and tested both ovens (upper/lower) they were off by 20/40 degrees, and they were new! (these ppl remodeled the same year and sold) but i know my air fryer cuz i use it weekly, so it's also about knowing the stuff you got (like we'll know where the cold/hot spots are on our grills, just from experience)