This sounds crazy, but stay with me: cauliflower. Roast it, rice it, then dry it out in a pan. It turns into teeny, toasty nuggets that mimic bread crumbs perfectly.
You can also use crispy fried onions (the ones from the can for green bean casserole). Crush them up for a umami bomb that will ruin you for plain bread crumbs forever. You’ve been warned.
And if you’re truly desperate, grated Parmesan cheese. It browns fast, so watch it. But a parmesan crust is basically savory crack. Add some garlic powder, and you’ve got pure gold.