Overwatering can indeed cause these symptoms, just hold back on watering for a while and see if the issue gets sorted 👊😉👌.
If the plant still develops at a slow rate and new growth is turning yellow and/or distorted other ways that might have caused issues like this is:
pH Imbalance: a pH imbalance can affect the plant's ability to absorb nutrients properly, causing those symptoms as the nutrient uptake is inhibited.
Nutrient Lockout: High PPM of nutrients can lead to nutrient lockout, where roots are unable to absorb water and essential nutrients. Ensure the nutrient solution is within the appropriate range.
Iron deficiency: is common and leads to chlorosis (yellowing) of new leaves while the veins remain green. Consider using a chelated iron supplement.
Low calcium uptake: can cause new growth to yellow or become distorted. This can be exacerbated by high phosphorus levels, which can bind with calcium to form insoluble calcium phosphate, making it unavailable to the plant. Ensure balanced nutrient levels and consider adding a calcium supplement if needed.