Whatever you use to marinate and flavor chicken.
Tired of buying the expensive one-off packets
-Salt and pepper
-Bbq spice blend
-Garlic powder, onion powder, salt, pepper, oregano
-Home made chimichurri from herbs in my garden
Experiment with spices you have on hand to see what you like best.
Always salt your meat well before cooking it to draw out moisture through osmosis
I love a good jerk chicken:
https://dinnerthendessert.com/slow-cooker-jerk-chicken/
Honestly, I’ve had a lot of success recently using LLMs for suggestions like this plus whatever I have in my fridge. Came up with a tasty siracha maple and maple mustard pair when I saw a deal on shitty bulk maple syrup.
They’ve really let me take advantage of deals and sales etc.
I’ve seen a lot of good suggestions, but I wanted to point out the common theme that a marinade should have oil, salt, acid, and unami (savory/ meatiness). So for asian style maybe sesame oil, vinegar, Soy sauce (Soy sauce does salt + unami). Or my mum’s was orange juice, red wine, garlic, salt & pepper. I’d maybe add some Worcestershire sauce or olive brine for a bit extra unami, but smell it, taste it, go with your gut…
To clarify to your question, what’s inexpensive largely depends on what is already in your cupboards, but hitting those 4 areas will usually work out well.
I love to use the Greek style marinate from this blog post. There’s a decent amount of other marinates to try too.
https://www.hauteandhealthyliving.com/6-easy-chicken-marinade-recipes/#wprm
Italian vinaigrette + sous vide