Eggplant is one of my favourite vegetables. If you were to ask my mother, she would tell you how weird that is. Until I started keto, I point blank refused to eat this stuff even though my mom knows how to cook eggplant really well. I just really did not like the taste. Because of this, I am pretty sure that keto changes your taste buds. I've even started eating chicken livers.
Eggplant is a non-starchy vegetable that is high in Potassium (and many other things), perfect for keto. It also only contains 3g of carbs per 100g.