I hate chef uniforms in general, especially check pants. I often wonder why all chefs wear that clown/slave uniform. That being said jeans make you look like a slob, you might as well be a delivery driver or dishwasher.
As long as your gear is clean and you look good, you can wear what you want in my shop. Chili pepper pants and the like are great for an aspiring blooming onion chef but make you look even dumber than you are, they are always good for a laugh and I will most likely make fun of you for the duration.
That being said I usually wear tan or black pants, if needed I can throw on a good shirt and tie for meetings or go out after work and not look like an idiot in my chili pants. It is my opinion this profession will never advance without it being percieved as professional and educated by the general public. Jeans and chilli pants reinforce the notion that "cooks" are undereducated and underclass, some people do not care and appearance means little, they will faun over their plates to get them perfect but pay no attention their own presentation which is equally important.