Dirt Flavored Fish Tacos

See this yummy looking fish taco? Well, looks can be deceiving... I have no idea what I did wrong, but it was the worst thing I think I have ever cooked. Seriously, it tasted like DIRT!! I'm not exaggerating. Imagine picking up a handful of dirt, wrapping it with lettuce, cheese and sour cream in a tortilla and taking a bite. Could anyone tell me what I did wrong? Does tilapia normally have a dirt taste? I bought the individually wrapped tilapia fillets. I gave them a good squeeze of lemon juice and sprinkled them with a mixture of chili powder, black pepper and Cheyenne pepper before cooking them. The texture was good, but it tasted like spicy dirt. If I'm not making any sense it's the Levaquin talking. I've been having some trouble with my ear the past week being cloggy and achy so I finally broke down and went to the doctor. Good thing I did because I have double ear infections and a sinus infection. They gave me Levaquin and told me it might make me feel like I'm in La La Land... and it does! I keep forgetting what I'm doing :)